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EP0593396B1 - Fermeture de garantie en matière plastique - Google Patents

Fermeture de garantie en matière plastique Download PDF

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Publication number
EP0593396B1
EP0593396B1 EP93810706A EP93810706A EP0593396B1 EP 0593396 B1 EP0593396 B1 EP 0593396B1 EP 93810706 A EP93810706 A EP 93810706A EP 93810706 A EP93810706 A EP 93810706A EP 0593396 B1 EP0593396 B1 EP 0593396B1
Authority
EP
European Patent Office
Prior art keywords
guarantee
locking elements
closure cap
locking
cap according
Prior art date
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.)
Expired - Lifetime
Application number
EP93810706A
Other languages
German (de)
English (en)
Other versions
EP0593396A1 (fr
Inventor
Ronald L. Kelly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crown Cork and Seal Co Inc
Original Assignee
Crown Cork and Seal Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Crown Cork and Seal Co Inc filed Critical Crown Cork and Seal Co Inc
Publication of EP0593396A1 publication Critical patent/EP0593396A1/fr
Application granted granted Critical
Publication of EP0593396B1 publication Critical patent/EP0593396B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges

Definitions

  • the invention relates to a guarantee closure cap made of plastic for a container, on the container neck of which at least one radially outwardly projecting blocking surface is provided, according to the preamble of claim 1.
  • the guarantee function of such closures is that when the closure cap is removed for the first time, a guarantee band is torn or at least partially is torn down. The tearing or tearing off indicates to the consumer that the container has already been opened.
  • the guarantee band can completely surround the container neck or extend only over part of the circumference.
  • the dividing lines at which the guarantee tape tears or tears can be horizontal, i.e. run parallel to the cap base as well as vertically. E.g. it can be provided that the guarantee tape can be torn off as a complete ring from the closure cap and remains on the neck of the container. In other cases, it is desirable that the guarantee tape or the torn-off parts of the guarantee tape get caught on the sealing cap. All of these embodiments encompass the present invention.
  • the containers to be closed can be glass or plastic beverage bottles. It can also be other containers, e.g. Canned jars, wide-mouth containers and the like.
  • a bead is provided on the neck of the container, the underside of which forms the blocking surface with which the guarantee band of the closure cap comes into engagement.
  • the invention is not limited to such circumferential beads.
  • individual, segment-like cams or other retaining elements can also be used or depressions can also be provided in the neck of the container without departing from the scope of the invention. It is only important that there is an outwardly protruding locking surface that is straight, curved, regular or irregular, engages with a locking element on the sealing cap or on the guarantee band when the sealing cap is put on, in order to prevent the sealing cap from being unscrewed can be damaged without damaging the predetermined breaking points.
  • such caps have a single-start or multi-start thread.
  • closure caps which are connected to the container neck in a different way. These include e.g. Caps with snap devices or bayonet locks.
  • Such guarantee closures are e.g. known from US-PS-4,978,017, US-PS-5,090,788 or US-PS-4,784,280 and US-PS-4,635,808.
  • the flaps point obliquely upwards and inwards after being put on.
  • the flaps are connected to the guarantee band by a flexible connection, so that they can be pivoted around this connection point.
  • the swivel range is limited at the bottom by a projection arranged below the flaps, against which the flaps rest when the container is opened.
  • the disadvantage of these flaps is that they can only be pivoted upwards to a very limited extent. Even in their upper end position, in which they rest on the inner surface of the guarantee band, the flaps are still directed clearly inwards and hinder the fitting of the closure cap.
  • the object of the invention is therefore to provide a guarantee closure cap of the type described above (US-A-5,107,998) for closing such containers, which on the one hand is easy to manufacture in mass production and which on the other hand reliably fulfills its guarantee function and is easy on the The neck of the container must be put on without damaging the predetermined breaking points as soon as it is put on.
  • this task is solved by a guarantee cap with the features of claim 1.
  • the arrangement is particularly advantageous of the locking elements proposed, which are connected to the guarantee band by at least one articulated element, and which after the guarantee closure has been placed on the container neck engage under the blocking surface and the guarantee band block at the neck of the container.
  • the flaps or retaining elements themselves are designed to be elastic so that they can snap resiliently over the locking surface when they are put on
  • the invention proposes the use of a practically rigid locking element which also has an elastic / resilient joint element the guarantee band is connected.
  • the locking elements have an upper retaining surface with which they can be brought into engagement with the locking surface on the container neck.
  • they are provided with a lower support surface which can be supported on the surface of the inner wall of the guarantee band.
  • the locking elements can thus, on the one hand, deflect through the articulation elements when the guarantee closure is put on and pivot upwards, as a result of which the fitting process proceeds without any problems. If, on the other hand, the locking elements are pivoted in the opposite direction around the joint elements when the guarantee closure is opened, they are supported with the support surface on the inner wall of the guarantee band. The engagement of the locking elements with the locking surface on the container neck is fixed in such a way that it is practically impossible to open the guarantee closure without destroying the predetermined breaking points.
  • the locking elements can be supported with their support surfaces either directly on the surface of the inner wall of the guarantee band or indirectly, for example by support cams or projections on the guarantee band. It is only essential that the force exerted on the locking elements when the guarantee closure is opened is conducted into the guarantee band, so that the predetermined breaking points break or tear.
  • the locking elements are fastened to the joint elements in such a way that they protrude radially inwards in an intermediate position before the guarantee closure is applied to the container.
  • "Radially inwards” is intended to be both an approximately horizontal position and an obliquely upward position towards the cap base or include a position inclined in the opposite direction. It is essential for the intermediate position that the locking element protrudes radially inwards from the guarantee band so that when the guarantee closure is placed on a container, the latter can pivot the locking elements upwards to the cap base and outwards to the cap jacket around the joint elements, so that the container neck can penetrate the guarantee closure without damaging the predetermined breaking points. This is possible because the locking elements move outward from the container when pivoting around the joint elements and increase the free inside diameter of the guarantee band.
  • the locking elements pivoted elastically around the joint elements snap back again and are located below the locking surfaces on the container neck.
  • Such an elastic or resilient deflection can be realized practically with all plastic materials customary for such closures. This applies e.g. especially for polyethylene or polypropylene.
  • the locking elements are pivoted far enough upwards and outwards when pivoting into the closed position of the guarantee closure, that the container neck and the blocking surface can pass unhindered, and that after the guarantee closure is put on, the blocking elements spring under the blocking surface on the container neck or snap.
  • Another essential feature of the closure according to the invention is that when the closure is first removed from the container neck, the locking elements are moved downward and radially inward through the locking surfaces.
  • the radial inward pivoting obviously causes a reduction in the free inside diameter of the guarantee band, so that the locking elements continue with the locking surface or surfaces engage on the neck of the container and overlap this or these and thereby fix the guarantee tape on the neck of the container.
  • the pivoting movement of the locking elements therefore causes the free inside diameter of the guarantee band to be reduced and thus fixed on the container neck.
  • the guarantee closure exhibits particularly good opening and locking properties if the locking elements can be pivoted between the closed position and the open position by an angle of more than 100 °, preferably more than 140 °. Particularly with commercially available beverage bottles, particularly good results have been achieved if the swivel angle is approximately 160 ° to 180 °.
  • a particularly stable locking function of the locking elements is obtained if their retaining surface forms an angle of more than 60 °, preferably of approximately 70 ° to 100 °, with the supporting surface.
  • the locking elements can connect particularly securely to the locking surface on the container neck if the locking elements, viewed in plan view, have the shape of a segment of a circle, the circle of which runs coaxially with the guarantee band.
  • the length and the number of these circular segments can easily be determined depending on the configuration of the container neck and the support surface. A number of about 10 to 14 locking elements have proven particularly good in the case of beverage bottles with a 28 mm diameter.
  • the locking elements in the plan view also have a different shape, for example they can run in a straight line if, for example, the support surface in the plan view has the shape of a polygon.
  • Flexible material bridges between the guarantee band and the locking elements are particularly suitable as a joint element.
  • the material bridges can be provided over the entire length of the locking element. However, it is also conceivable to provide the material bridges only in partial areas of the locking elements, e.g. on the two outer edges or in the middle.
  • the predetermined breaking points for connecting the guarantee band or individual guarantee band segments with the sealing cap or with other guarantee band segments can best be formed as material webs which are correspondingly thinly dimensioned to tear when the guarantee closure is opened.
  • material webs which are correspondingly thinly dimensioned to tear when the guarantee closure is opened.
  • a guarantee closure 1 has a closure cap 2, which consists of a cap base 3 and a cylindrical cap jacket 4.
  • a guarantee band 6 is fastened to the closure cap 2 by means of a plurality of predetermined breaking bars 5.
  • a number of locking elements 8 are arranged on the guarantee band 6 by means of material bridges acting as a joint element 7.
  • the closure cap 2 is made together with the guarantee tape 6 and the locking elements 8 in one piece in a known manner in the plastic injection molding process.
  • the guarantee closure could also be produced using the compression molding process or in another suitable manner.
  • Warranty tapes manufactured separately are e.g. known from U.S. Patent 4,578,857.
  • the locking elements 8 are in position N according to FIG. 1 and the upper illustration in FIG. 2.
  • the locking element 8 arrives with threaded sections 10 and with a circumferential, annular projection 11 in engagement.
  • the locking elements 8 are thereby pivoted upwards and radially outwards about the pivot element 7 as a fulcrum, so that the free inside diameter of the guarantee band 6 increases and the guarantee band 6 can reach the position shown in FIG. 3 without the projection 11 that the predetermined breaking webs 5 would be damaged.
  • the locking elements 8 are directed radially inwards, it being not important in this position whether they additionally point slightly upwards or slightly downwards, since the elasticity of the joint element 7 causes them to pivot into the first closed position I is possible in any case.
  • the support surfaces 12 of the locking elements 8 determine the enlarged first inner diameter D1 (FIG. 6).
  • the locking elements 8 are located below the projection 11 and its locking surface 13, which faces the retaining surface 14 of the locking elements 8.
  • FIGS. 4 and 6 show how the retaining surface 14 engages with the blocking surface 13 when the guarantee closure is opened, the retaining elements 8 being pivoted radially inwards and downwards into the second opening position II and thereby determining the second reduced inside diameter D2.
  • the locking elements 8 thereby increase their engagement with the locking surface 13, so that the guarantee tape 6 cannot be pulled over the projection 11.
  • the predetermined breaking bars 5 therefore tear.
  • This configuration ensures particularly good stability of the locking elements 8 and, on the other hand, enables the locking elements to be pivoted by an angle of approximately 160 °, which is advantageous for the opening and closing function, as shown in FIG.
  • Figure 7 shows a modified embodiment in which the locking elements have an approximately V-shaped cross section.
  • Such a cross-sectional shape enables particularly easy and quick demolding of the guarantee closure from an axially ejecting injection molding tool.
  • a support projection 6a is provided on the inner wall of the guarantee band 6, on which the support surface 12 can be supported.
  • Figure 8 shows a modified embodiment in which the support surface 12 of the locking elements 8 is designed as a cam-like projection which can be supported in a corresponding recess 6b of the guarantee band 6.
  • the guarantee band 6 shown in FIG. 8 is not connected to the cap jacket 4 by individual material webs 5 but by a very thin, continuous material skin 5b (over 360 °).
  • Figure 9 shows a top view of the guarantee tape (from below). It can be seen from this that the joint elements 7 for fastening the locking elements 8 to the guarantee band 6 each extend over the entire length of the locking elements 8. Both the hinge elements 7 and the locking elements 8 are shaped as circular segments and run coaxially with the guarantee band 6.
  • FIG. 10 shows an embodiment in which the locking elements 8 are each connected to the guarantee band 6 on both sides by a joint element 7a, 7b.
  • This design allows particularly easy pivoting of the locking elements 8 when applied to a container neck.
  • the blocking elements 8 in the exemplary embodiment according to FIG. 10 are straight and not designed as circular segments.
  • FIG. 11 shows the schematic representation of a locking element 8, which is arranged by means of a centrally arranged, web-like articulated element 7c is connected to the guarantee band 6.
  • a multiplicity of relatively narrow locking elements 8 are provided, wherein in addition to the predetermined breaking points 5 shown in FIGS allow radial tearing of the guarantee band 6.
  • a protrusion 6c is provided on the guarantee band 6 and carries the associated locking element 8 by means of joint element 7.
  • this arrangement allows the guarantee band 6 to be made particularly thin and, on the other hand, increases the pivoting angle of the locking elements 8 from the first closing position I into the second opening position II (FIG. 6).
  • the exemplary embodiment according to FIG. 14 shows a modified version of the locking element 8 from FIG. 8.
  • the support surface 12b is shaped like a hook so that it can snap into the corresponding recess 6c. If the locking element 8 is bent downward by turning the guarantee lock 1 or another manipulation, the locking element fixes in its lower position. This increases security against manipulation.
  • the exemplary embodiment according to FIG. 15 shows a modified version of the guarantee band 6.
  • the guarantee band 6 has an outer band 6d which runs downwards from the thin, continuous predetermined breaking point 5b. Furthermore, the guarantee band 6 has an inner band 6e, which is connected to the outside along line 15 and is directed radially inwards, obliquely upwards. Locking elements are attached to the inside of the inner band 6e, as were shown in the exemplary embodiments according to FIGS. 1-14. When mounting these caps on a container can the inner band 6e bend outwards and the locking elements 8 are pivoted upwards and outwards. This determines the larger diameter D1. When the guarantee closure 1 is opened, the locking elements 8 are pivoted inwards downwards, the inner band 6e being able to bend inwards and thus further reducing the free inner diameter defined by the inner surface of the locking elements 8.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Claims (13)

  1. Couvercle de garantie en matière plastique pour un récipient sur le goulot (9) duquel est prévue au moins une surface d'arrêt (13) saillant radialement vers l'extérieur, comprenant un fond de couvercle (3), une enveloppe de couvercle cylindrique (4), une bande de garantie (6) apte à être arrachée et disposée sur le bord inférieur de l'enveloppe (4), et au moins un élément d'arrêt (8) qui est relié de façon pivotante à la surface intérieure de la bande de garantie (6) grâce à un élément articulé (7) et qui est en prise avec la surface d'arrêt (13) lorsque le couvercle est posé, caractérisé en ce que les éléments d'arrêt (8) comprennent d'une part une surface de retenue supérieure (14) qui, dans une première position I, s'étend vers le haut et radialement vers l'extérieur à partir des éléments articulés, moyennant quoi les éléments d'arrêt (8) définissent un diamètre intérieur agrandi D1, et d'autre part une surface d'appui inférieure (12) qui, dans une seconde position II, s'appuie contre la surface intérieure de la bande de garantie, au-dessous de l'élément articulé, moyennant quoi les éléments d'arrêt (8) définissent un diamètre intérieur plus petit D2.
  2. Couvercle de garantie selon la revendication 1, caractérisé en ce que les éléments d'arrêt (8), avant la pose du couvercle, font saillie radialement vers l'intérieur dans une position (N) intermédiaire entre leur position supérieure (I) et leur position inférieure (II).
  3. Couvercle de garantie selon les revendications 1 ou 2, caractérisé en ce que les éléments d'arrêt (8) sont aptes à pivoter entre la première position et la seconde position suivant un angle d'au moins 100°.
  4. Couvercle de garantie selon la revendication 3, caractérisé en ce que les éléments d'arrêt (8) sont aptes à pivoter entre la première et la seconde position suivant un angle d'au moins 140°.
  5. Couvercle de garantie selon la revendication 4, caractérisé en ce que les éléments d'arrêt (8) sont aptes à pivoter entre la première et la seconde position suivant un angle d'environ 160° à 180°.
  6. Couvercle de garantie selon l'une des revendications 1 à 5, caractérisé en ce que la surface de retenue (14) et la surface d'appui (12) définissent un angle d'au moins 60°.
  7. Couvercle de garantie selon la revendication 6, caractérisé en ce que la surface de retenue (14) et la surface d'appui (12) définissent un angle d'environ 70° à 100°.
  8. Couvercle de garantie selon l'une des revendications 1 à 7, caractérisé en ce que l'élément articulé (7) comporte au moins un pont de matériau flexible qui relie la bande de garantie (6) à un élément d'arrêt (8).
  9. Couvercle de garantie selon l'une des revendications 1 à 8, caractérisé en ce que les éléments d'arrêt (8), vus de face, ont la forme d'un segment de cercle coaxial par rapport à la bande de garantie (6).
  10. Couvercle de garantie selon l'une des revendications 1 à 8, caractérisé en ce que les éléments d'arrêt (8), vus de face, sont approximativement rectilignes.
  11. Couvercle de garantie selon l'une des revendications 1 à 10, caractérisé en ce que la bande de garantie comporte non seulement une bande extérieure (6d), mais aussi une bande intérieure (6e) qui est dirigée vers l'intérieur et vers le haut à partir du bord inférieur de la bande extérieure (6d), et en ce que les éléments d'arrêt (8) sont prévus sur la bande intérieure (6e).
  12. Couvercle de garantie selon l'une des revendications 1 à 11, caractérisé en ce que la surface d'appui (12) des éléments d'arrêt (8) est conçue comme une saillie en forme d'ergot qui est apte à s'appuyer dans un creux correspondant (6b) de la bande de garantie.
  13. Couvercle de garantie selon la revendication 12, caractérisé en ce que la saillie en forme d'ergot de la surface d'appui (12b) est estampée en forme de crochet, de sorte qu'elle peut s'encliqueter dans un creux correspondant (6c).
EP93810706A 1992-10-14 1993-10-06 Fermeture de garantie en matière plastique Expired - Lifetime EP0593396B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US961134 1992-10-14
US07/961,134 US5356019A (en) 1992-10-14 1992-10-14 Tamper indicating plastic closure

Publications (2)

Publication Number Publication Date
EP0593396A1 EP0593396A1 (fr) 1994-04-20
EP0593396B1 true EP0593396B1 (fr) 1996-01-31

Family

ID=25504110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810706A Expired - Lifetime EP0593396B1 (fr) 1992-10-14 1993-10-06 Fermeture de garantie en matière plastique

Country Status (13)

Country Link
US (1) US5356019A (fr)
EP (1) EP0593396B1 (fr)
JP (1) JPH06199356A (fr)
CN (1) CN1086782A (fr)
AU (1) AU665272B2 (fr)
BR (1) BR9304174A (fr)
CA (1) CA2107805A1 (fr)
DE (1) DE59301547D1 (fr)
ES (1) ES2082620T3 (fr)
NZ (1) NZ248925A (fr)
PL (1) PL300677A1 (fr)
TR (1) TR27602A (fr)
ZA (1) ZA937591B (fr)

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USD508204S1 (en) 2003-10-23 2005-08-09 Crown Cork & Seal Technologies Corporation Tamper-evident band
USD538654S1 (en) 2004-04-30 2007-03-20 Crown Packaging Technology, Inc. Crown-like plastic closure

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US8353413B2 (en) * 2007-01-05 2013-01-15 Phoenix Closures, Inc. Tamper-evident closure and container combination
US20080173611A1 (en) * 2007-01-18 2008-07-24 Silgan Holdings Inc. Tamper evident band with hook
EP2144764B1 (fr) * 2007-05-09 2010-11-03 ACTEGA DS GmbH Utilisation de particules métalliques sphériques comme additifs de repérage par laser pour matériaux d'étanchéité, de fermeture ou de revêtement ou pour vernis
US8276777B2 (en) * 2008-10-03 2012-10-02 Chuck Shieh Closure with tamper evident strip for container
JP6128831B2 (ja) * 2012-12-21 2017-05-17 日本クロージャー株式会社 合成樹脂製容器蓋
USD747201S1 (en) 2013-09-18 2016-01-12 Bericap Closure
FR3015442B1 (fr) 2013-12-24 2016-02-05 Bericap Dispositif de bouchage articule avec indicateur de premiere ouverture
USD833278S1 (en) 2014-09-03 2018-11-13 Bericap Closure for a container
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US10899505B2 (en) * 2019-01-10 2021-01-26 Silgan White Cap LLC Band-receiving closure with recess
US11059633B2 (en) 2019-10-31 2021-07-13 Cheer Pack North America Flip-top closure for container
EP4186810B1 (fr) * 2023-03-28 2025-01-29 PCHB bvba Ensemble couvercle-bec, ensemble couvercle et emballage pour produit fluide

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US4938370B1 (en) * 1989-04-26 2000-10-17 Hc Ind Tamper-indicating plastic closure
CA2008769C (fr) * 1989-01-30 2002-03-19 Stephen W. Mcbride Manchon d'inviolabilite en matiere plastique
US4978017A (en) * 1989-04-26 1990-12-18 H-C Industries, Inc. Tamper-indicating plastic closure
US5090788A (en) * 1989-07-27 1992-02-25 Owens-Illinois Closure Inc. Tamper indicating package
US5205426A (en) * 1991-04-09 1993-04-27 H-C Industries, Inc. Tamper-indicating plastic closure
US5167335A (en) * 1991-04-09 1992-12-01 H-C Industries, Inc. Tamper-indicating plastic closure
US5107998A (en) * 1991-06-14 1992-04-28 Bruno Zumbuhl Tamper proof ring for threaded closures
DE4201997C1 (fr) * 1992-01-25 1992-12-10 Stella Kunststofftechnik Gmbh, 6228 Eltville, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD508204S1 (en) 2003-10-23 2005-08-09 Crown Cork & Seal Technologies Corporation Tamper-evident band
USD538654S1 (en) 2004-04-30 2007-03-20 Crown Packaging Technology, Inc. Crown-like plastic closure

Also Published As

Publication number Publication date
JPH06199356A (ja) 1994-07-19
CA2107805A1 (fr) 1994-04-15
AU4735193A (en) 1994-04-28
ZA937591B (en) 1994-05-03
EP0593396A1 (fr) 1994-04-20
US5356019A (en) 1994-10-18
DE59301547D1 (de) 1996-03-14
BR9304174A (pt) 1994-04-19
PL300677A1 (en) 1994-04-18
NZ248925A (en) 1995-07-26
TR27602A (tr) 1995-06-13
AU665272B2 (en) 1995-12-21
ES2082620T3 (es) 1996-03-16
CN1086782A (zh) 1994-05-18

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