NO300338B1 - Endefres-verktöy innrettet til å anbringes nede i et borehull - Google Patents
Endefres-verktöy innrettet til å anbringes nede i et borehull Download PDFInfo
- Publication number
- NO300338B1 NO300338B1 NO895228A NO895228A NO300338B1 NO 300338 B1 NO300338 B1 NO 300338B1 NO 895228 A NO895228 A NO 895228A NO 895228 A NO895228 A NO 895228A NO 300338 B1 NO300338 B1 NO 300338B1
- Authority
- NO
- Norway
- Prior art keywords
- cutting
- blades
- cutting elements
- tool
- milling tool
- Prior art date
Links
- 238000003801 milling Methods 0.000 claims description 39
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 12
- 238000012856 packing Methods 0.000 description 10
- 239000000956 alloy Substances 0.000 description 9
- 238000005553 drilling Methods 0.000 description 9
- 230000035515 penetration Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 239000003923 scrap metal Substances 0.000 description 5
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 1
- 239000010956 nickel silver Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
- E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
- E21B10/5671—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts with chip breaking arrangements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
- E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/78—Tool of specific diverse material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/893—Hollow milling Tool
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Earth Drilling (AREA)
- Geophysics And Detection Of Objects (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/290,575 US5038859A (en) | 1988-04-15 | 1988-12-27 | Cutting tool for removing man-made members from well bore |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO895228D0 NO895228D0 (no) | 1989-12-22 |
| NO895228L NO895228L (no) | 1990-06-28 |
| NO300338B1 true NO300338B1 (no) | 1997-05-12 |
Family
ID=23116616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO895228A NO300338B1 (no) | 1988-12-27 | 1989-12-22 | Endefres-verktöy innrettet til å anbringes nede i et borehull |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5038859A (es) |
| EP (1) | EP0376433B1 (es) |
| AU (1) | AU610737B2 (es) |
| CA (1) | CA1325802C (es) |
| DE (1) | DE68928680T2 (es) |
| MX (1) | MX163286A (es) |
| NO (1) | NO300338B1 (es) |
Families Citing this family (66)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5086838A (en) * | 1986-01-06 | 1992-02-11 | Baker Hughes Incorporated | Tapered cutting tool for reaming tubular members in well bore |
| US5373900A (en) | 1988-04-15 | 1994-12-20 | Baker Hughes Incorporated | Downhole milling tool |
| US5462120A (en) | 1993-01-04 | 1995-10-31 | S-Cal Research Corp. | Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes |
| US5826651A (en) * | 1993-09-10 | 1998-10-27 | Weatherford/Lamb, Inc. | Wellbore single trip milling |
| US5836387A (en) * | 1993-09-10 | 1998-11-17 | Weatherford/Lamb, Inc. | System for securing an item in a tubular channel in a wellbore |
| US5720349A (en) * | 1995-10-12 | 1998-02-24 | Weatherford U.S., Inc. | Starting mill and operations |
| US6202752B1 (en) | 1993-09-10 | 2001-03-20 | Weatherford/Lamb, Inc. | Wellbore milling methods |
| US5787978A (en) * | 1995-03-31 | 1998-08-04 | Weatherford/Lamb, Inc. | Multi-face whipstock with sacrificial face element |
| US5806595A (en) * | 1993-09-10 | 1998-09-15 | Weatherford/Lamb, Inc. | Wellbore milling system and method |
| US6024168A (en) * | 1996-01-24 | 2000-02-15 | Weatherford/Lamb, Inc. | Wellborne mills & methods |
| US5887668A (en) * | 1993-09-10 | 1999-03-30 | Weatherford/Lamb, Inc. | Wellbore milling-- drilling |
| US6070665A (en) * | 1996-05-02 | 2000-06-06 | Weatherford/Lamb, Inc. | Wellbore milling |
| US5887655A (en) * | 1993-09-10 | 1999-03-30 | Weatherford/Lamb, Inc | Wellbore milling and drilling |
| US5727629A (en) * | 1996-01-24 | 1998-03-17 | Weatherford/Lamb, Inc. | Wellbore milling guide and method |
| NO300234B1 (no) * | 1994-11-25 | 1997-04-28 | Norske Stats Oljeselskap | Anordning for oppsamling av uönsket materiale i en olje- eller gassbrönn |
| US5803176A (en) * | 1996-01-24 | 1998-09-08 | Weatherford/Lamb, Inc. | Sidetracking operations |
| US6056056A (en) * | 1995-03-31 | 2000-05-02 | Durst; Douglas G. | Whipstock mill |
| US5709265A (en) * | 1995-12-11 | 1998-01-20 | Weatherford/Lamb, Inc. | Wellbore window formation |
| US5791417A (en) | 1995-09-22 | 1998-08-11 | Weatherford/Lamb, Inc. | Tubular window formation |
| US5862870A (en) * | 1995-09-22 | 1999-01-26 | Weatherford/Lamb, Inc. | Wellbore section milling |
| US5642787A (en) * | 1995-09-22 | 1997-07-01 | Weatherford U.S., Inc. | Section milling |
| US5908071A (en) * | 1995-09-22 | 1999-06-01 | Weatherford/Lamb, Inc. | Wellbore mills and inserts |
| US5984005A (en) * | 1995-09-22 | 1999-11-16 | Weatherford/Lamb, Inc. | Wellbore milling inserts and mills |
| US6170576B1 (en) * | 1995-09-22 | 2001-01-09 | Weatherford/Lamb, Inc. | Mills for wellbore operations |
| US5626189A (en) * | 1995-09-22 | 1997-05-06 | Weatherford U.S., Inc. | Wellbore milling tools and inserts |
| US5636692A (en) * | 1995-12-11 | 1997-06-10 | Weatherford Enterra U.S., Inc. | Casing window formation |
| US6155349A (en) * | 1996-05-02 | 2000-12-05 | Weatherford/Lamb, Inc. | Flexible wellbore mill |
| US6547006B1 (en) * | 1996-05-02 | 2003-04-15 | Weatherford/Lamb, Inc. | Wellbore liner system |
| US5735359A (en) * | 1996-06-10 | 1998-04-07 | Weatherford/Lamb, Inc. | Wellbore cutting tool |
| CA2210563C (en) * | 1996-07-15 | 2004-03-02 | Halliburton Energy Services, Inc. | Apparatus for completing a subterranean well and associated methods of using same |
| CA2209958A1 (en) * | 1996-07-15 | 1998-01-15 | James M. Barker | Apparatus for completing a subterranean well and associated methods of using same |
| US5833003A (en) * | 1996-07-15 | 1998-11-10 | Halliburton Energy Services, Inc. | Apparatus for completing a subterranean well and associated methods of using same |
| US5862862A (en) * | 1996-07-15 | 1999-01-26 | Halliburton Energy Services, Inc. | Apparatus for completing a subterranean well and associated methods of using same |
| US5813465A (en) * | 1996-07-15 | 1998-09-29 | Halliburton Energy Services, Inc. | Apparatus for completing a subterranean well and associated methods of using same |
| AU719919B2 (en) * | 1996-07-15 | 2000-05-18 | Halliburton Energy Services, Inc. | Apparatus for completing a subterranean well and associated methods of using same |
| AU714721B2 (en) * | 1996-07-15 | 2000-01-06 | Halliburton Energy Services, Inc. | Apparatus for completing a subterranean well and associated methods of using same |
| NO313763B1 (no) * | 1996-07-15 | 2002-11-25 | Halliburton Energy Serv Inc | Fremgangsmåte ved reetablering av adgang til en brönnboring og styredel til bruk ved tildannelse av en åpning i en brönnfôring |
| US5730221A (en) * | 1996-07-15 | 1998-03-24 | Halliburton Energy Services, Inc | Methods of completing a subterranean well |
| US5873423A (en) * | 1997-07-31 | 1999-02-23 | Briese Industrial Technologies, Inc. | Frustum cutting bit arrangement |
| US5975811A (en) * | 1997-07-31 | 1999-11-02 | Briese Industrial Technologies, Inc. | Cutting insert cartridge arrangement |
| US6044919A (en) * | 1997-07-31 | 2000-04-04 | Briese Industrial Technologies, Inc. | Rotary spade drill arrangement |
| US6026916A (en) * | 1997-08-01 | 2000-02-22 | Briese Industrial Technologies, Inc. | Rotary drill arrangement |
| US6032740A (en) * | 1998-01-23 | 2000-03-07 | Weatherford/Lamb, Inc. | Hook mill systems |
| US6167958B1 (en) | 1998-01-29 | 2001-01-02 | Baker Hughes Incorporated | Cutting matrix and method of applying the same |
| US6464434B2 (en) | 1998-01-29 | 2002-10-15 | Baker Hughes Incorporated | Cutting matrix and method applying the same |
| US6513601B1 (en) | 1999-01-28 | 2003-02-04 | Triangle Equipment As | Method for setting a packer in a well bore, and a packer |
| US7210533B2 (en) * | 2004-02-11 | 2007-05-01 | Halliburton Energy Services, Inc. | Disposable downhole tool with segmented compression element and method |
| US7255172B2 (en) * | 2004-04-13 | 2007-08-14 | Tech Tac Company, Inc. | Hydrodynamic, down-hole anchor |
| US7111937B2 (en) * | 2004-12-16 | 2006-09-26 | Augen Opticos Sa De Cv | Spectacle lenses incorporating atoric surfaces |
| US7926597B2 (en) * | 2007-05-21 | 2011-04-19 | Kennametal Inc. | Fixed cutter bit and blade for a fixed cutter bit and methods for making the same |
| US8534392B2 (en) * | 2010-02-22 | 2013-09-17 | Baker Hughes Incorporated | Composite cutting/milling tool having differing cutting elements and method for making the same |
| US8434572B2 (en) * | 2010-06-24 | 2013-05-07 | Baker Hughes Incorporated | Cutting elements for downhole cutting tools |
| US8985246B2 (en) | 2010-09-28 | 2015-03-24 | Baker Hughes Incorporated | Subterranean cutting tool structure tailored to intended use |
| US20130037256A1 (en) * | 2011-08-12 | 2013-02-14 | Baker Hughes Incorporated | Rotary Shoe Direct Fluid Flow System |
| NL2009146C2 (en) | 2012-07-06 | 2014-01-07 | Ihc Holland Ie Bv | Cutter head for removing material from a water bed. |
| US9512690B2 (en) | 2012-12-18 | 2016-12-06 | Smith International, Inc. | Milling cutter having undulating chip breaker |
| US9816355B2 (en) * | 2014-07-24 | 2017-11-14 | Baker Hughes, A Ge Company, Llc | Multi-purpose through tubing tool |
| GB2541017B (en) * | 2015-08-06 | 2018-06-06 | Schlumberger Holdings | Downhole cutting tool |
| US10392868B2 (en) * | 2015-09-30 | 2019-08-27 | Schlumberger Technology Corporation | Milling wellbore casing |
| GB2543847B (en) * | 2015-11-02 | 2019-12-04 | Schlumberger Technology Bv | Rotary Milling Tool |
| US11377921B2 (en) * | 2016-05-24 | 2022-07-05 | Heather Burca | Slot recovery method |
| US10900290B2 (en) | 2018-06-29 | 2021-01-26 | Varel International Ind., L.L.C. | Fixed cutter completions bit |
| US11530576B2 (en) | 2019-03-15 | 2022-12-20 | Taurex Drill Bits, LLC | Drill bit with hybrid cutting arrangement |
| US20230264273A1 (en) * | 2020-06-19 | 2023-08-24 | Gmv As | Tool for inside chip separating processing of a tube and method for using the tool |
| EP4033068A1 (en) * | 2021-01-25 | 2022-07-27 | Welltec A/S | Downhole wireline tool string |
| RU204556U1 (ru) * | 2021-02-11 | 2021-05-31 | Общество с ограниченной ответственностью Научно-производственная фирма "ТЕХНОЛОГИЯ" | Фреза |
Family Cites Families (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1068644B (de) * | 1959-11-12 | Servco Manufacturing Corporation, Long Beach, Calif. (V St. A.) | Werkzeug zum Wegfräsen eines Bohrlochverrohrungsabschnittes, eines Bohrgestängeabschnittes od. dgl | |
| US1734469A (en) * | 1925-09-16 | 1929-11-05 | William O Journeay | Drill bit |
| US2337322A (en) * | 1940-06-29 | 1943-12-21 | Gascoigne Joseph Colin | Cutting tool having tip or insert of tungsten carbide or like hard materials |
| US2328494A (en) * | 1942-05-07 | 1943-08-31 | O K Tool Co Inc | Milling cutter |
| US2633682A (en) * | 1950-10-14 | 1953-04-07 | Eastman Oil Well Survey Co | Milling bit |
| US2709490A (en) * | 1951-09-28 | 1955-05-31 | A 1 Bit & Tool Company Inc | Tool for severing and milling away a section of casing in the bore of a well |
| US2846193A (en) * | 1957-01-07 | 1958-08-05 | Chadderdon Jack | Milling cutter for use in oil wells |
| US2999541A (en) * | 1957-10-11 | 1961-09-12 | Kinzbach Tool Company Inc | Milling tool |
| US3110084A (en) * | 1958-08-15 | 1963-11-12 | Robert B Kinzbach | Piloted milling tool |
| US3106973A (en) * | 1960-09-26 | 1963-10-15 | Christensen Diamond Prod Co | Rotary drill bits |
| US3147536A (en) * | 1961-10-27 | 1964-09-08 | Kammerer Jr Archer W | Apparatus for milling tubular strings in well bores |
| US3114416A (en) * | 1961-11-13 | 1963-12-17 | Archer W Kammerer | Liner hanger and liner milling tool |
| US3120286A (en) * | 1962-01-04 | 1964-02-04 | Jersey Prod Res Co | Stabilized drag bit |
| US3145790A (en) * | 1963-06-10 | 1964-08-25 | Jersey Prod Res Co | Drag bit |
| US3726351A (en) * | 1971-04-26 | 1973-04-10 | E Williams | Mill tool |
| US4259033A (en) * | 1974-11-29 | 1981-03-31 | Kennametal Inc. | Cutting insert |
| SU530941A1 (ru) * | 1975-07-04 | 1976-10-05 | Специальное Конструкторское Бюро Научно-Производственного Объединения "Геотехника" | Буровани коронка |
| AU523307B2 (en) * | 1977-11-02 | 1982-07-22 | Raymond Garnet Hillier and Elizabeth Jean Hillier | Drilling bit |
| SU791890A1 (ru) * | 1978-01-30 | 1980-12-30 | Ордена Трудового Красного Знамени Институт Сверхтвердых Материалов Ан Украинской Сср | Долото колонковое |
| US4274769A (en) * | 1978-04-21 | 1981-06-23 | Acker Drill Company, Inc. | Impregnated diamond drill bit construction |
| JPS58181507A (ja) * | 1982-04-15 | 1983-10-24 | Toshiba Corp | 穴あけ工具 |
| US4440247A (en) * | 1982-04-29 | 1984-04-03 | Sartor Raymond W | Rotary earth drilling bit |
| US4500234A (en) * | 1982-11-12 | 1985-02-19 | Waukesha Cutting Tools, Inc. | Trepanning tool |
| DE3570480D1 (en) * | 1984-03-26 | 1989-06-29 | Eastman Christensen Co | Multi-component cutting element using consolidated rod-like polycrystalline diamond |
| US4696502A (en) * | 1985-08-19 | 1987-09-29 | Smith International | Dual string packer mill |
| US4710074A (en) * | 1985-12-04 | 1987-12-01 | Smith International, Inc. | Casing mill |
| US4796709A (en) * | 1986-01-06 | 1989-01-10 | Tri-State Oil Tool Industries, Inc. | Milling tool for cutting well casing |
| US4978260A (en) * | 1986-01-06 | 1990-12-18 | Tri-State Oil Tools, Inc. | Cutting tool for removing materials from well bore |
| US4682663A (en) * | 1986-02-18 | 1987-07-28 | Reed Tool Company | Mounting means for cutting elements in drag type rotary drill bit |
| US4717290A (en) * | 1986-12-17 | 1988-01-05 | Homco International, Inc. | Milling tool |
-
1988
- 1988-12-27 US US07/290,575 patent/US5038859A/en not_active Expired - Lifetime
-
1989
- 1989-07-13 DE DE68928680T patent/DE68928680T2/de not_active Expired - Lifetime
- 1989-07-13 EP EP89307104A patent/EP0376433B1/en not_active Expired - Lifetime
- 1989-07-18 CA CA000605964A patent/CA1325802C/en not_active Expired - Lifetime
- 1989-07-18 AU AU38213/89A patent/AU610737B2/en not_active Ceased
- 1989-09-07 MX MX17467A patent/MX163286A/es unknown
- 1989-12-22 NO NO895228A patent/NO300338B1/no not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE68928680T2 (de) | 1999-11-18 |
| US5038859A (en) | 1991-08-13 |
| AU3821389A (en) | 1990-07-05 |
| AU610737B2 (en) | 1991-05-23 |
| EP0376433B1 (en) | 1998-05-27 |
| NO895228D0 (no) | 1989-12-22 |
| NO895228L (no) | 1990-06-28 |
| DE68928680D1 (de) | 1998-07-02 |
| EP0376433A1 (en) | 1990-07-04 |
| MX163286A (es) | 1992-04-03 |
| CA1325802C (en) | 1994-01-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1K | Patent expired |