CA1049322A - Method and apparatus for encoding dental work - Google Patents
Method and apparatus for encoding dental workInfo
- Publication number
- CA1049322A CA1049322A CA239,031A CA239031A CA1049322A CA 1049322 A CA1049322 A CA 1049322A CA 239031 A CA239031 A CA 239031A CA 1049322 A CA1049322 A CA 1049322A
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- Canada
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- digit
- dental work
- radials
- dental
- index
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Method and apparatus are disclosed for providing identification on the dental work in a human mouth. The tool includes a plurality of tines arranged in a predetermined pattern. Each tine permits the indentation in the dental work of an index point. The tool also includes a plurality of digit indicators each secured to a tine and each positioned on a radial extending from the index point. The positioning of each digit indicator is determined by superimposing a two dimensional coordlnate system over the index point and dividing the coordlnate system into quadrants. Each quadrant includes a plurality of equally spaced radials each one representing a different decimal digit. The digit indicators simultaneously imprint or indent the dental work with the index points such that the resulting pattern left on the dental work is a code comprising a plurality of decimal digits representing the dental operator or dentist. Such code is useful for positive identification purposes.
Method and apparatus are disclosed for providing identification on the dental work in a human mouth. The tool includes a plurality of tines arranged in a predetermined pattern. Each tine permits the indentation in the dental work of an index point. The tool also includes a plurality of digit indicators each secured to a tine and each positioned on a radial extending from the index point. The positioning of each digit indicator is determined by superimposing a two dimensional coordlnate system over the index point and dividing the coordlnate system into quadrants. Each quadrant includes a plurality of equally spaced radials each one representing a different decimal digit. The digit indicators simultaneously imprint or indent the dental work with the index points such that the resulting pattern left on the dental work is a code comprising a plurality of decimal digits representing the dental operator or dentist. Such code is useful for positive identification purposes.
Description
10~9322 l~he present invention pertains to a methDd and apparatus for en-coding dental work and more particularly, for providing a means to identi-fy the individual whose dental work is encoded.
The mobility of the present population has presented substantial difficulties to the identification of missing persons. Presently, the identification of an individual by means of fingerprints is usually imr possible unless the person being identified has a crimm al record acces-sible by the investiyator. In many instances where the individual is de-ceased, and no records are available, such as, for example, an accident victim who has perished in a fire, resort is made to dent~l records in an attempt to identify thè person. Obviously, identification by dental records is a hopeless task unless the investigator is already generally aware of the -person's identity and merely wants positive proof of that identity~
It is therefore an object of one broad aspect of the present m-vention to provide a method for encoding dental w~rk to permit identifi-cation of an individual.
It is an object of another aspect of the present invention to pro-vide a method for encoding dental work that may readily be decoded and con-veniently an~ inexpensively implemented.
It is an object of still another aspect of the present invention to provide apparatus for conveniently impr mting a sode in the dental work of a human being.
By one broad aspect of this invention, apparatus is provided for encoding information on a surface, e.g. on dental work comprising: a base member; a plurality of tines extending from the base menber and arranged in a predetermined pattern, each tine terminating in a point for formung an index point; and a plurality of digit indicators, each positioned on one of the tines adjacent the point of the tine, each digit indicator being positioned on a radial extending from the point.
, ~ ~ _ .
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, , ' - ' ' ~'- '`' ' ' ~0~93Z2 By another aspect of this invention, a method i9 provided for en-coding information on dental work comprising the steps of: (a) - 1 a -. .
imprinting by indentation of the dental work a plurality of dental points arranged i~ a predetermlned pattern; an~ (b) substantially slmultaneously imprinting, by indentation in the dental work, a plurality of digit indi- _ cations, each being positioned on a different predetermined radial extend-ing from one of the digit indications in a predetermined quadrant about on of the digit indications.
By one variant of this aspect, the plurality of digit indications are three index points arranged in a triangular pattern having one side shorter than the other two sides, while in a second variant, the digit in-dentations æ e each positioned on one of ten radials, the radials dividing the predetenmined quadrant, and in a third v æ iant, the radials are equally spaced.
By another aspect of this invention, a method is provided for en-coding information on dental work comprising: imprinting by indentations in the dental work, a plurality of index points arranged in a predeter~ined pattern, each index point forming the origin of a two dimensional coordin-ate system divided into quadrants, each quadrant being divided into a pre-determined number of equally spaced radials, each radial representing a different decimal digit; and substantially simwltaneously imprinting by indentation in the dental work a plurality of digit indications each positioned on a different one of the radials.
By still another aspect of the invention, a method is pro~ided for encoding information on a surface oomprising: imprinting ~y indenta-tions in the surface, a plurality of index points arranged in a predeter-muned pattern, each index point formlng the origin of a two dimensional r coord mate system divided into quadrants, each quadrant being divided into a predetermined number of equally spaced radials, each radial representing a different decimal digit; and substantially simultaneously imprinting L~ _ ~ - 2 -- , .
- ?
.:
: - -- . . ~ ' l~D49322 by indentation in the surface a plurality of digit indications each posi-tioned on a different one of the radials.
In the accompanying drawings, Figure 1 is a perspectiv~ vi~ of a dental har~ tool showing r
The mobility of the present population has presented substantial difficulties to the identification of missing persons. Presently, the identification of an individual by means of fingerprints is usually imr possible unless the person being identified has a crimm al record acces-sible by the investiyator. In many instances where the individual is de-ceased, and no records are available, such as, for example, an accident victim who has perished in a fire, resort is made to dent~l records in an attempt to identify thè person. Obviously, identification by dental records is a hopeless task unless the investigator is already generally aware of the -person's identity and merely wants positive proof of that identity~
It is therefore an object of one broad aspect of the present m-vention to provide a method for encoding dental w~rk to permit identifi-cation of an individual.
It is an object of another aspect of the present invention to pro-vide a method for encoding dental work that may readily be decoded and con-veniently an~ inexpensively implemented.
It is an object of still another aspect of the present invention to provide apparatus for conveniently impr mting a sode in the dental work of a human being.
By one broad aspect of this invention, apparatus is provided for encoding information on a surface, e.g. on dental work comprising: a base member; a plurality of tines extending from the base menber and arranged in a predetermined pattern, each tine terminating in a point for formung an index point; and a plurality of digit indicators, each positioned on one of the tines adjacent the point of the tine, each digit indicator being positioned on a radial extending from the point.
, ~ ~ _ .
' ~ " ' : ' ' ' ~ `
:: .
, , ' - ' ' ~'- '`' ' ' ~0~93Z2 By another aspect of this invention, a method i9 provided for en-coding information on dental work comprising the steps of: (a) - 1 a -. .
imprinting by indentation of the dental work a plurality of dental points arranged i~ a predetermlned pattern; an~ (b) substantially slmultaneously imprinting, by indentation in the dental work, a plurality of digit indi- _ cations, each being positioned on a different predetermined radial extend-ing from one of the digit indications in a predetermined quadrant about on of the digit indications.
By one variant of this aspect, the plurality of digit indications are three index points arranged in a triangular pattern having one side shorter than the other two sides, while in a second variant, the digit in-dentations æ e each positioned on one of ten radials, the radials dividing the predetenmined quadrant, and in a third v æ iant, the radials are equally spaced.
By another aspect of this invention, a method is provided for en-coding information on dental work comprising: imprinting by indentations in the dental work, a plurality of index points arranged in a predeter~ined pattern, each index point forming the origin of a two dimensional coordin-ate system divided into quadrants, each quadrant being divided into a pre-determined number of equally spaced radials, each radial representing a different decimal digit; and substantially simwltaneously imprinting by indentation in the dental work a plurality of digit indications each positioned on a different one of the radials.
By still another aspect of the invention, a method is pro~ided for encoding information on a surface oomprising: imprinting ~y indenta-tions in the surface, a plurality of index points arranged in a predeter-muned pattern, each index point formlng the origin of a two dimensional r coord mate system divided into quadrants, each quadrant being divided into a predetermined number of equally spaced radials, each radial representing a different decimal digit; and substantially simultaneously imprinting L~ _ ~ - 2 -- , .
- ?
.:
: - -- . . ~ ' l~D49322 by indentation in the surface a plurality of digit indications each posi-tioned on a different one of the radials.
In the accompanying drawings, Figure 1 is a perspectiv~ vi~ of a dental har~ tool showing r
- 2 a -.
: ' ~ :, - -- -:
- - -. - .
the apparatus of one as~ect of t~ present invention sec~red thereto;
Figure 2 is an enlarged view of the tip of the tool of Figure l;
Figure 3 is a side elevational view, sli~htly enlarged, of one of the tines of the tool of Figure 2;
Figure 4 is a bottom view of that portion of the tool shcwn in Fiyure 2;
Figure 5 is a schematic view of a code pattern useful in explain-ing the apparatus and method of various aspects of the present invention;
Figure 6 is an enlarged view of Figure 5 showing the use of an overlay in the decoding of the code Imprinted in accordance with the method of t~e present invention and with the apparatus of the present invention;
and Figure 7 is an enlarged view of the tip of the tool of yet another aspect of this invention.
The method of broad aspects of the present invention contemplates the utilization of a unique code assigned not to the individual in whose mouth the code is placed but rather assigned to the dentist or oral sur-geon. The um que nu~ber may be, for example, the United States Social Security ~u~ber of the individual. Upon ascertaining this unique number, the dentist m~y readily be located and the dental records of the patient Qbtained. Using this technique, the difficulty of imprinting numerous codes by a single dentist is overcome and the method and apparatus for en-coding is simplified.
Referring now to the drawings, the present apparatus oomprises a tool, one aspect of which is shown generally at 10, that may be afflxed to a handpiece 11 or any other convenient holder. The to~l includes a plurality o~ tines t in this embodinent, three tines 12, 13 and 14), each tine extending from a base 16 and terminating in points 17, 18 and 19, respectively.
m e tines 17-19, in plan vlew (Figure 4) are positioned in a , :
-., , , ' : - ' ' .. ' : ; ~- . . `
- ~ .
predetcrmined manner as will be described more fully hPreinafter. Each of the tlnes includes one or more digit indicators such as, for example, those shown ln 23, 24 and 25. The digit indicators may take a vàriety of forms; however, in the embodiment shown in Figures 1-4, each digit indicator includes an indentation producing edge such as, for example, that shown at 30, the purposes of which will become apparent as the description hereof proceeds.
The points 17, 18 and 19 of the tines are used to form an imprint, by indentation, in the dental work of a patient. The imprint may be placed on any suitable filling surface (a non-biting surface to minimize wear of the imprint). The points whe~ used to form such an imprint by indentation in the dental work provide a predetermined pattern of index points; for example, Figure 5 illustrates a typical predetermined pattern showing index points 35, 36 and 37. Since the tines 17, lô and 19 are fixed with respect to each other, the pattPrn such as that shown in Figure 5 w~ll always be capable of being oriented so that~one index point, such as, for example, index point 35, will be recognized as the top of the pattern. This predetermined pattern may, of course, take various forms; however, a pattern such as, for example, that shown in Figure 5 seems convenient and is formed of a triangle having one side obviously shorter than the other sides so that the base of the triangle may readily be recognizable.
As described above, each of the tines 17-19 may be one or more digit indicators such as, for example, that shown at 23 secured thereto in a position close to the respective po$nt of the tines 80 that the corresponding indentation producing edge, such as, for example, that shown at 30, will also form an imprint in the dental work adjacent the corresponding index point. In the embodiment shown in Figures 1-4, only one diglt indicator is shown per tine. To illustrate more clearly the method and apparatus of aspects of the present invention, Figure 5 illustrates a p~ttern wherein two of the tines (those forming index points 35 and 36) each have two digit indicators to form digit indications .
-:: - - - . -. .
40, 41, 42 and 43, respectively, while the tine forming index point 37 has a single digit indicator to form digit lnd~cator 44.
As stated prev~ously, the indentations are f~rmed in the dental work such as, for example, in a non-biting surface of a filling;
the indentations are produced by forcing the tool 10 into the deformable surface of the filling, thus resulting in each of the point~ such as, for exampleJ 17, lô and 19, together with each indentation producing edge such as, for example 30 contacting the filling surface and being forced thereagainst to provide a permanent pattern. There are numerous holders or handpieces such as, for example, that shown at 11 in Figure 1 to hold the tool 10; for example, it may be desirable to utilize con-ventional impact type handpieces that would conveniently provide suffi-cient force to cause the tines and digit indicators to impress the pattern in the dental work. The tines should be closely spaced so that the resulting pattern is small enough to be placed on the small surfaces available to receive such patterns found in the dental work in the average patient. The utilization of a triangular pattern provides a convenient means to imprint the pattern when the surface upon which it is imprinted i8 not flat; further, the utilization of digit indicators secured to the tines with indentation producing edges readily provides the required indentations when the surfaces are uneven (concave or convex). There are numerous forms of indentation producing edges such as, for example, that shown at 30 that may be used to form digit indications. For example, the digit indicators 50 of Figure 7 are formed wlth lndentation producing edges 51 that will produce an indenta-tion of slightly different form than that of the digit indicator 23 but which under some circumstances may be more convenient to use when the surfaces upon which the pattern is being imprinted is irregular and not flat.
Once the pattern is placed in the dental work of the patient, the code represented thereby may readily be ascertained by photographing and enlarging (by well known techniques) the pattern and placing an ... , . : .
overlay over the enlarged photograph. Thus, a pattern such as, for example, that shown in Figure 5 would be photographed and enlarged and an overlay placed on the pattern such as, for example, shown in Figure 6. Referrin~ now to Figure 6, the enlarged photograph 53 with the over-lay, includes index po$nts that are placed directly over the index points 35, 36 and 37. Each of the index points on the overlay has a ~wo dimensional coordinate system superimpo6ed thereon with the coordinate system divided into quadrants. Thus, index point 35, with it~ coordin-ate system is divided into quadrants 60-63 while index point 36 has its coordinate system divided into quadrants 64-67 and index point 37 has its coordinate system divided into quadrants 68-71. Each of the quad-rants 60-71 is provided with a plurality of radially extending lines 75, each representing a numerical digit from zero to nine; therefore, each digit indication positioned on one of the radial lines represents a decimal digit. For example, referring to the index point 35 in Figure 6, it may be seen that the digit indicatlon 40 in quadrant 60 coincides with thë seventh radial in that quadrant which would therefore represent the decimal digit 7. Using the s3me technique for the remainder of the digit indicationfi of the pattern shown in Figure 6 and reading clockwise beginning with the index point 35, the pattern may be decoded into the decimal numbers 7, 8, 7, 3, 6. It will be obvious that a greater or lesser number af digits may be utilized and that the digits may be grouped acco~ding to the index points. For example, the above number may be decoded into 78-73-6.
If the code to be utilized by the respective dentists and oral surgeons is to coincide with the Social Security Numbers a pattern utilizing three index points will accommodate all such Social Security Numbers.
It may be seen that the method and apparatus of various aspects of the present invention provide an inexpensive technique for identifi-cation o individuals through their respective dental records without the use of elaborate coding techniques that are unique to each individual 1~4932Z
individual; rather, an inelcpen~ive tool i8 ~sed and a method is employed that provides identification of the individual through the dental recordg in the possession of a dentist or oral surgeon whDse unique code is placed on the dental work.
The method and apparatus of other aspects of the present invention may also be used in a similar manner for ldentification of other ob~ects such as, for example, jewelry (small surfaces), bone implants, prosthetic devices and the like.
: ' ~ :, - -- -:
- - -. - .
the apparatus of one as~ect of t~ present invention sec~red thereto;
Figure 2 is an enlarged view of the tip of the tool of Figure l;
Figure 3 is a side elevational view, sli~htly enlarged, of one of the tines of the tool of Figure 2;
Figure 4 is a bottom view of that portion of the tool shcwn in Fiyure 2;
Figure 5 is a schematic view of a code pattern useful in explain-ing the apparatus and method of various aspects of the present invention;
Figure 6 is an enlarged view of Figure 5 showing the use of an overlay in the decoding of the code Imprinted in accordance with the method of t~e present invention and with the apparatus of the present invention;
and Figure 7 is an enlarged view of the tip of the tool of yet another aspect of this invention.
The method of broad aspects of the present invention contemplates the utilization of a unique code assigned not to the individual in whose mouth the code is placed but rather assigned to the dentist or oral sur-geon. The um que nu~ber may be, for example, the United States Social Security ~u~ber of the individual. Upon ascertaining this unique number, the dentist m~y readily be located and the dental records of the patient Qbtained. Using this technique, the difficulty of imprinting numerous codes by a single dentist is overcome and the method and apparatus for en-coding is simplified.
Referring now to the drawings, the present apparatus oomprises a tool, one aspect of which is shown generally at 10, that may be afflxed to a handpiece 11 or any other convenient holder. The to~l includes a plurality o~ tines t in this embodinent, three tines 12, 13 and 14), each tine extending from a base 16 and terminating in points 17, 18 and 19, respectively.
m e tines 17-19, in plan vlew (Figure 4) are positioned in a , :
-., , , ' : - ' ' .. ' : ; ~- . . `
- ~ .
predetcrmined manner as will be described more fully hPreinafter. Each of the tlnes includes one or more digit indicators such as, for example, those shown ln 23, 24 and 25. The digit indicators may take a vàriety of forms; however, in the embodiment shown in Figures 1-4, each digit indicator includes an indentation producing edge such as, for example, that shown at 30, the purposes of which will become apparent as the description hereof proceeds.
The points 17, 18 and 19 of the tines are used to form an imprint, by indentation, in the dental work of a patient. The imprint may be placed on any suitable filling surface (a non-biting surface to minimize wear of the imprint). The points whe~ used to form such an imprint by indentation in the dental work provide a predetermined pattern of index points; for example, Figure 5 illustrates a typical predetermined pattern showing index points 35, 36 and 37. Since the tines 17, lô and 19 are fixed with respect to each other, the pattPrn such as that shown in Figure 5 w~ll always be capable of being oriented so that~one index point, such as, for example, index point 35, will be recognized as the top of the pattern. This predetermined pattern may, of course, take various forms; however, a pattern such as, for example, that shown in Figure 5 seems convenient and is formed of a triangle having one side obviously shorter than the other sides so that the base of the triangle may readily be recognizable.
As described above, each of the tines 17-19 may be one or more digit indicators such as, for example, that shown at 23 secured thereto in a position close to the respective po$nt of the tines 80 that the corresponding indentation producing edge, such as, for example, that shown at 30, will also form an imprint in the dental work adjacent the corresponding index point. In the embodiment shown in Figures 1-4, only one diglt indicator is shown per tine. To illustrate more clearly the method and apparatus of aspects of the present invention, Figure 5 illustrates a p~ttern wherein two of the tines (those forming index points 35 and 36) each have two digit indicators to form digit indications .
-:: - - - . -. .
40, 41, 42 and 43, respectively, while the tine forming index point 37 has a single digit indicator to form digit lnd~cator 44.
As stated prev~ously, the indentations are f~rmed in the dental work such as, for example, in a non-biting surface of a filling;
the indentations are produced by forcing the tool 10 into the deformable surface of the filling, thus resulting in each of the point~ such as, for exampleJ 17, lô and 19, together with each indentation producing edge such as, for example 30 contacting the filling surface and being forced thereagainst to provide a permanent pattern. There are numerous holders or handpieces such as, for example, that shown at 11 in Figure 1 to hold the tool 10; for example, it may be desirable to utilize con-ventional impact type handpieces that would conveniently provide suffi-cient force to cause the tines and digit indicators to impress the pattern in the dental work. The tines should be closely spaced so that the resulting pattern is small enough to be placed on the small surfaces available to receive such patterns found in the dental work in the average patient. The utilization of a triangular pattern provides a convenient means to imprint the pattern when the surface upon which it is imprinted i8 not flat; further, the utilization of digit indicators secured to the tines with indentation producing edges readily provides the required indentations when the surfaces are uneven (concave or convex). There are numerous forms of indentation producing edges such as, for example, that shown at 30 that may be used to form digit indications. For example, the digit indicators 50 of Figure 7 are formed wlth lndentation producing edges 51 that will produce an indenta-tion of slightly different form than that of the digit indicator 23 but which under some circumstances may be more convenient to use when the surfaces upon which the pattern is being imprinted is irregular and not flat.
Once the pattern is placed in the dental work of the patient, the code represented thereby may readily be ascertained by photographing and enlarging (by well known techniques) the pattern and placing an ... , . : .
overlay over the enlarged photograph. Thus, a pattern such as, for example, that shown in Figure 5 would be photographed and enlarged and an overlay placed on the pattern such as, for example, shown in Figure 6. Referrin~ now to Figure 6, the enlarged photograph 53 with the over-lay, includes index po$nts that are placed directly over the index points 35, 36 and 37. Each of the index points on the overlay has a ~wo dimensional coordinate system superimpo6ed thereon with the coordinate system divided into quadrants. Thus, index point 35, with it~ coordin-ate system is divided into quadrants 60-63 while index point 36 has its coordinate system divided into quadrants 64-67 and index point 37 has its coordinate system divided into quadrants 68-71. Each of the quad-rants 60-71 is provided with a plurality of radially extending lines 75, each representing a numerical digit from zero to nine; therefore, each digit indication positioned on one of the radial lines represents a decimal digit. For example, referring to the index point 35 in Figure 6, it may be seen that the digit indicatlon 40 in quadrant 60 coincides with thë seventh radial in that quadrant which would therefore represent the decimal digit 7. Using the s3me technique for the remainder of the digit indicationfi of the pattern shown in Figure 6 and reading clockwise beginning with the index point 35, the pattern may be decoded into the decimal numbers 7, 8, 7, 3, 6. It will be obvious that a greater or lesser number af digits may be utilized and that the digits may be grouped acco~ding to the index points. For example, the above number may be decoded into 78-73-6.
If the code to be utilized by the respective dentists and oral surgeons is to coincide with the Social Security Numbers a pattern utilizing three index points will accommodate all such Social Security Numbers.
It may be seen that the method and apparatus of various aspects of the present invention provide an inexpensive technique for identifi-cation o individuals through their respective dental records without the use of elaborate coding techniques that are unique to each individual 1~4932Z
individual; rather, an inelcpen~ive tool i8 ~sed and a method is employed that provides identification of the individual through the dental recordg in the possession of a dentist or oral surgeon whDse unique code is placed on the dental work.
The method and apparatus of other aspects of the present invention may also be used in a similar manner for ldentification of other ob~ects such as, for example, jewelry (small surfaces), bone implants, prosthetic devices and the like.
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Apparatus for encoding information on dental work comprising a base member; a plurality of tines extending from said base member and arranged in a predetermined pattern, each tine terminating in a point for forming an index point; and a plurality of digit indicators, each positioned on one of said tines adjacent the point of said tine, each digit indicator being positioned an a radial extending from said point.
2. A method for encoding information on dental work comprising the steps of:
(a) imprinting by indentation of said dental work a plurality of dental points arranged in a predetermined pattern;
and (b) substantially simultaneously imprinting, by indentation in said dental work, a plurality of digit indicators, each being positioned on a different predetermined radial extending from one of said digit in-dications in a predetermined quadrant about said one of said digit indi-cations.
(a) imprinting by indentation of said dental work a plurality of dental points arranged in a predetermined pattern;
and (b) substantially simultaneously imprinting, by indentation in said dental work, a plurality of digit indicators, each being positioned on a different predetermined radial extending from one of said digit in-dications in a predetermined quadrant about said one of said digit indi-cations.
3. The method set forth in claim 2 wherein said plurality of digit indications are three index points arranged in a triangular pattern having one side shorter than the other two sides.
4. The method set forth in claim 3 wherein said digit indicators are each positioned on one of ten radials, said radials dividing said predetermined quadrant.
5. The method set forth in claim 4 wherein said radials are equally spaced.
6. A method for encoding on dental work comprising: imprinting by indentations in said dental work, a plurality of index points arranged in a predetermined pattern, each index point forming the origin of a two dimensional coordinate system divided into quadrants, each quadrant being divided into a predetermined number of equally spaced radials, each radial representing a different decimal digit; and substantially simultaneously imprinting by indentation in said dental work a plurality of digit indi-cations each positioned on a different one of said radials.
7. A method for encoding information on a surface comprising:
imprinting by indentations in said surface, a plurality of index points arranged in a predetermined pattern, each index point forming the origin of a two dimensional coordinate system divided into quadrants, each qua-drant being divided into a predetermined number of equally spaced radials, each radial representing a different decimal digit; and substantially simultaneously imprinting by indentation in said surface a plurality of digit indicators, each positioned on a different one of said radials.
imprinting by indentations in said surface, a plurality of index points arranged in a predetermined pattern, each index point forming the origin of a two dimensional coordinate system divided into quadrants, each qua-drant being divided into a predetermined number of equally spaced radials, each radial representing a different decimal digit; and substantially simultaneously imprinting by indentation in said surface a plurality of digit indicators, each positioned on a different one of said radials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA239,031A CA1049322A (en) | 1975-11-05 | 1975-11-05 | Method and apparatus for encoding dental work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA239,031A CA1049322A (en) | 1975-11-05 | 1975-11-05 | Method and apparatus for encoding dental work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1049322A true CA1049322A (en) | 1979-02-27 |
Family
ID=4104448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA239,031A Expired CA1049322A (en) | 1975-11-05 | 1975-11-05 | Method and apparatus for encoding dental work |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1049322A (en) |
-
1975
- 1975-11-05 CA CA239,031A patent/CA1049322A/en not_active Expired
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