EP0367373A1 - Dual purpose card edge connector - Google Patents

Dual purpose card edge connector Download PDF

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Publication number
EP0367373A1
EP0367373A1 EP89305746A EP89305746A EP0367373A1 EP 0367373 A1 EP0367373 A1 EP 0367373A1 EP 89305746 A EP89305746 A EP 89305746A EP 89305746 A EP89305746 A EP 89305746A EP 0367373 A1 EP0367373 A1 EP 0367373A1
Authority
EP
European Patent Office
Prior art keywords
card
slot
conductive pads
contact portions
contact
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.)
Granted
Application number
EP89305746A
Other languages
German (de)
French (fr)
Other versions
EP0367373B1 (en
Inventor
Howard Wallace Andrews, Jr.
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.)
Whitaker LLC
Original Assignee
AMP Inc
Whitaker LLC
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
Priority claimed from US07/339,910 external-priority patent/US4869672A/en
Application filed by AMP Inc, Whitaker LLC filed Critical AMP Inc
Publication of EP0367373A1 publication Critical patent/EP0367373A1/en
Application granted granted Critical
Publication of EP0367373B1 publication Critical patent/EP0367373B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/721—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures cooperating directly with the edge of the rigid printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures

Definitions

  • the invention disclosed herein relates to card edge connectors for electrically connecting circuits on a printed circuit card to circuits on a printed circuit board or back plane.
  • Known card edge connectors are constructed to receive circuit cards having conductive traces or pads on a given center-line spacing; e.g., 0.050 inches between adjacent pads. Thus, a card having a different spacing could not be accepted therein. This means that if a user wanted to use a new circuit card having a different pad spacing, he would have to remove the first card edge connector (a difficult, time consuming task) and install a second connector which would accept the new card.
  • a dual purpose card edge connector which can receive either one of two different printed circuit cards having conductive pads on different center-line spacing.
  • the connector includes a dielectric housing having a card receiving slot and conductive contact elements disposed therein with contact portions thereon alternatingly projecting into the slot at high and low levels. Further, positioning members are provided in the slot to position one circuit card so that only the contact portions at the high level engage conductive pads thereon and to position a different circuit card so that the contact portions at both levels will engage conductive pads thereon.
  • card edge connector 10 constructed in accordance with the present invention, is capable of receiving either printed circuit card 12, having closely-spaced conductive pads 14; e.g., pads 14 being on 0.050 inch center-line spacing, or card 16 having pads 18 on a less-dense spacing; e.g., 0.100 inches.
  • Connector 10 as more clearly shown in Figure 2, includes an elongated, dielectric housing 20 having a card-edge receiving slot 22 and a plurality of conductive contact elements 24, 26.
  • Contact elements 24, 26 are respectively located in cavities 28, 30 which preferably border both sides of slot 22 and which open thereinto. As shown, cavities 28 alternate with cavities 30.
  • positioning members 34 spaced along floor 32 of slot 22 and extending upwardly therefrom are positioning members 34 (only one is shown in Figure 2). Additionally, transverse keying walls 36 ( Figures 1 and 5) are provided in slot 22 to insure that cards 12 and 16 are inserted thereinto in the proper orientation and registration.
  • cavities 28 include pre-loading bar 38 extending thereacross adjacent the top thereof. Further, passages 40, located near the center of housing 20, extends therethrough, opening into cavities 28 and onto the housing's bottom surface 42. Contacts 24 are positioned in cavities 28 with free ends 44 bearing against bar 38 and leads 46 extending outwardly from surface 42 of housing 20 through passages 40. Further, contact portions 48 on resilient beams 50 project into slot 22 near top surface 52 of housing 20.
  • cavities 30 open only into the lower half of slot 22 with walls 54 closing off access to the upper half.
  • Passages 56, adjacent side walls 58, extend through housing 20, opening into cavities 30 and onto bottom surface 42.
  • Contacts 26 are positioned in cavities 30 with an upper portion 60 on reversely bent resilient beams 62 being preloaded by free ends 64 of walls 54 and contact portions 66 adjacent free ends 68 of beams 62 projecting into the lower half of slot 22; i.e., below walls 54.
  • Leads 70 extend outwardly from surface 42 of housing 20 through passages 56.
  • contact portions 48 on elements 24, alternating with contact portions 66 on elements 26, project into the upper half or upper level of slot 22 while contact portions 66 project into the lower half or lower level of slot 22.
  • Both contact elements 24, 26 are stamped and formed from a suitable conductive material; e.g., beryllium copper or phosphor bronze.
  • Figure 5 shows card 12 positioned above connector 10.
  • Pads 14 include pads 14a which are adjacent card edge 72 and pads 14b which are located interiorly from edge 72. Further spaced notches 74 are provided in edge 72 with the spacing of positioning members 34 in slot 22. Keying notches 76 are provided to cooperate with keying walls 36. As card 12 is inserted into slot 22, notches 74 receive positioning members 34 so that card edge 72 abuts slot floor 32. Accordingly, and as shown in Figure 6, contact portions 48 on elements 24 engage pads 14b and contact portions 66 engage pads 14a adjacent card edge 72; ie., in the lower half of slot 22.
  • Figure 7 shows card 16 positioned above connector 10.
  • Pads 18 are adjacent card edge 78.
  • Keying notches 76 in edge 78 are provided to cooperate with keying walls 36 in slot 22.
  • edge 78 abuts positioning members 34 to position card 16 in the upper half thereof. Accordingly, as shown in Figure 8, only contact portions 48 on contact elements 24 engage pads 18 on card 16.
  • positioning members 34 are shown as transverse walls extending upwardly from slot floor 32.
  • equivalent positioning members can take other forms; e.g., pins crossing slot 22 at the appropriate height.
  • the profile of slot 22 can be tailored to accept different cards of different thicknesses so that, for example, a thin card would go to the floor while a thicker card would be stopped above the floor.
  • a card edge connector which can accept, without modification, printed circuit cards having conductive pads on one center-line spacing or other circuit cards having conductive pads on another center-line spacing.
  • the connector includes conductive contact elements positioned along a card edge-receiving slot and having contact portions thereon projecting into the slot at alternatingly high and low levels. Further, positioning members in the slot cooperate with the cards such that cards having notches along the edge thereof are permitted to slide past the positioning members so that the pads thereon are engaged by the contact portions at both levels. Alternatively, a card without notches are prevented by the positioning members from entering the slot too far so that the conductive pads thereon are engaged only to the upper level contact portions.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

A dual purpose card edge connector (10) can accept a printed circuit card (12) having conductive pads (14) on one center-line spacing or another printed circuit card (16) having conductive pads (18) on a different center-line spacing. More particularly, contact portions (48,66) on contact elements (24,26) disposed in an insulating housing (20) are alternatively located at two different levels to cooperate with positioning members (34) in the card receiving slot (22) so that a circuit card (16) not having edge notches are positioned on the positioning members (34) and the conductive pads (18) are engaged by the contact portions (48) at the upper level while a circuit card (12) having edge notches slides past the positioning members (34) and the conductive pads (14) thereon are engaged by the contact portions (48,66) at both levels.
Figure imgaf001

Description

  • The invention disclosed herein relates to card edge connectors for electrically connecting circuits on a printed circuit card to circuits on a printed circuit board or back plane.
  • Known card edge connectors; e.g., U.S. Patent 4,636,021, are constructed to receive circuit cards having conductive traces or pads on a given center-line spacing; e.g., 0.050 inches between adjacent pads. Thus, a card having a different spacing could not be accepted therein. This means that if a user wanted to use a new circuit card having a different pad spacing, he would have to remove the first card edge connector (a difficult, time consuming task) and install a second connector which would accept the new card.
  • Therefore, it is now proposed to provide a card edge connector which will accept one or another card each having a different conductive pad spacing.
  • According to the invention, a dual purpose card edge connector is provided which can receive either one of two different printed circuit cards having conductive pads on different center-line spacing. The connector includes a dielectric housing having a card receiving slot and conductive contact elements disposed therein with contact portions thereon alternatingly projecting into the slot at high and low levels. Further, positioning members are provided in the slot to position one circuit card so that only the contact portions at the high level engage conductive pads thereon and to position a different circuit card so that the contact portions at both levels will engage conductive pads thereon.
  • An embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which:-­
    • Figure 1 is a perspective view of an electrical connector constructed in accordance with one embodiment of the present invention and also of two printed circuit cards which may be inserted into the connector for electrical engagement notwithstanding the fact that the conductive pads thereon are on different center-line spacing;
    • Figure 2 is a cut-away view of the connector to show the details with regard to the contact elements contained therein;
    • Figures 3 and 4 are end cross-sectional views of the connector showing details of the cavities and contact elements positioned therein;
    • Figure 5 is a side view of the connector with portions cut away and one of the two circuit cards which may be inserted therein;
    • Figure 6 is an end view of the connector with one of the two circuit cards inserted therein;
    • Figure 7 is the side view of the connector shown in Figure 5 and with the other of the two circuit cards which may be inserted therein; and
    • Figure 8 is an end view of the connector with the other circuit card inserted therein.
  • With reference to Figure 1, card edge connector 10, constructed in accordance with the present invention, is capable of receiving either printed circuit card 12, having closely-spaced conductive pads 14; e.g., pads 14 being on 0.050 inch center-line spacing, or card 16 having pads 18 on a less-dense spacing; e.g., 0.100 inches.
  • Connector 10, as more clearly shown in Figure 2, includes an elongated, dielectric housing 20 having a card-edge receiving slot 22 and a plurality of conductive contact elements 24, 26. Contact elements 24, 26 are respectively located in cavities 28, 30 which preferably border both sides of slot 22 and which open thereinto. As shown, cavities 28 alternate with cavities 30. Spaced along floor 32 of slot 22 and extending upwardly therefrom are positioning members 34 (only one is shown in Figure 2). Additionally, transverse keying walls 36 (Figures 1 and 5) are provided in slot 22 to insure that cards 12 and 16 are inserted thereinto in the proper orientation and registration.
  • With reference to Figure 3, cavities 28 include pre-loading bar 38 extending thereacross adjacent the top thereof. Further, passages 40, located near the center of housing 20, extends therethrough, opening into cavities 28 and onto the housing's bottom surface 42. Contacts 24 are positioned in cavities 28 with free ends 44 bearing against bar 38 and leads 46 extending outwardly from surface 42 of housing 20 through passages 40. Further, contact portions 48 on resilient beams 50 project into slot 22 near top surface 52 of housing 20.
  • With reference to Figure 4, cavities 30 open only into the lower half of slot 22 with walls 54 closing off access to the upper half. Passages 56, adjacent side walls 58, extend through housing 20, opening into cavities 30 and onto bottom surface 42. Contacts 26 are positioned in cavities 30 with an upper portion 60 on reversely bent resilient beams 62 being preloaded by free ends 64 of walls 54 and contact portions 66 adjacent free ends 68 of beams 62 projecting into the lower half of slot 22; i.e., below walls 54. Leads 70 extend outwardly from surface 42 of housing 20 through passages 56.
  • From the foregoing description and Figures 2-4, it is clear that contact portions 48 on elements 24, alternating with contact portions 66 on elements 26, project into the upper half or upper level of slot 22 while contact portions 66 project into the lower half or lower level of slot 22.
  • Both contact elements 24, 26 are stamped and formed from a suitable conductive material; e.g., beryllium copper or phosphor bronze.
  • Figure 5 shows card 12 positioned above connector 10. Pads 14 include pads 14a which are adjacent card edge 72 and pads 14b which are located interiorly from edge 72. Further spaced notches 74 are provided in edge 72 with the spacing of positioning members 34 in slot 22. Keying notches 76 are provided to cooperate with keying walls 36. As card 12 is inserted into slot 22, notches 74 receive positioning members 34 so that card edge 72 abuts slot floor 32. Accordingly, and as shown in Figure 6, contact portions 48 on elements 24 engage pads 14b and contact portions 66 engage pads 14a adjacent card edge 72; ie., in the lower half of slot 22.
  • Figure 7 shows card 16 positioned above connector 10. Pads 18 are adjacent card edge 78. Keying notches 76 in edge 78 are provided to cooperate with keying walls 36 in slot 22. As card 16 is inserted into slot 22, edge 78 abuts positioning members 34 to position card 16 in the upper half thereof. Accordingly, as shown in Figure 8, only contact portions 48 on contact elements 24 engage pads 18 on card 16.
  • In the illustrated embodiment, positioning members 34 are shown as transverse walls extending upwardly from slot floor 32. However, equivalent positioning members can take other forms; e.g., pins crossing slot 22 at the appropriate height. Further, the profile of slot 22 can be tailored to accept different cards of different thicknesses so that, for example, a thin card would go to the floor while a thicker card would be stopped above the floor.
  • As can be discerned, a card edge connector has been disclosed which can accept, without modification, printed circuit cards having conductive pads on one center-line spacing or other circuit cards having conductive pads on another center-line spacing. The connector includes conductive contact elements positioned along a card edge-receiving slot and having contact portions thereon projecting into the slot at alternatingly high and low levels. Further, positioning members in the slot cooperate with the cards such that cards having notches along the edge thereof are permitted to slide past the positioning members so that the pads thereon are engaged by the contact portions at both levels. Alternatively, a card without notches are prevented by the positioning members from entering the slot too far so that the conductive pads thereon are engaged only to the upper level contact portions.

Claims (8)

1. A dual purpose card-edge connector (10) for use with either a first printed circuit card (16), having conductive pads on one center-line spacing or a second printed circuit card (12) having conductive pads on a different center-line spacing, said connector comprising;
an elongated, dielectric housing (20) having an elongated, outwardly open card edge-receiving slot (22) and one or more positioning means (34) in said slot, said positioning means (34) adapted to position the first circuit card (16) at a high level in said slot (22) and to position the second circuit card (12) at a low level in said slot (22); and
conductive contact elements (24,26) disposed in said housing and extending alongside said slot and having contact portions (48,66) thereon projecting into said slot (22) at alternatingly high and low levels, said contact portions (48) at said high level adapted to engage conductive pads (14,18) on either the first or second circuit card (16,12) which may be inserted into said slot (22) and said contact portions (66) at said low level adapted to engage conductive pads (14) on the second circuit card (12) which may be inserted into said slot (22).
2. The connector (10) of claim 1 wherein the second printed circuit card (12) has notches (74) on one edge (78) and said positioning means (34) include transverse walls (34) extending upwardly in said slot (22) and which cooperate with the notches (74) to permit the second printed circuit card (12) to be positioned at the low level.
3. The connector of claim 2 wherein the outwardly facing surfaces of the transverse walls (34) are between the upper and low levels so that the first printed circuit card (16) abuts thereagainst upon being inserted into the slot (22).
4. A dual purpose card edge connector (10) configured and adapted to mate with both a first card (16) having a plurality of first conductive pads (18) arranged in a first spatial pattern and a second card (12) having a plurality of second conductive pads (14) arranged in a second spatial pattern, different from the first spatial pattern, said connector comprising:
an elongated housing (20) having a card edge receiving slot (22) shaped to receive both the first card (16) and the second card (12) at respective times;
a plurality of first contact elements (24) disposed in the housing (20) to extend alongside the slot (22) and having first contact portions (48) positioned to extend into the slot (22) to contact respective ones of the first conductive pads (18) above a selected level in the slot (22);
a plurality of second contact elements (26) disposed in the housing (20) to extend alongside the slot (22) and having second contact portions (66) positioned to extend into the slot (22) to contact respective ones of the second conductive pads (14) below the selected level in the slot; and
means (34) in the housing (20) for positioning the first card (16) at an upper level in the housing (20) at which the first contact portions (48) contact the first conductive pads (18) and the second contact portions (66) are isolated from the card (16) and for positioning the second card (12) at a lower level in the housing, at which the second contact portions (66) contact the second conductive pads (14).
5. The invention of claim 4, wherein the second card (12) has a plurality of third conductive pads (14) arranged in the first spatial pattern, and wherein the first contact portions (48) contact the third conductive pads (14) when the second card (12) is positioned in the slot (22) at the lower level.
6. The invention of claim 4 or 5, wherein the first and second contact portions (48,66) alternate with one another alongside the slot (22).
7. The invention of claim 4, wherein the positioning means (34) comprises at least one positioning member (34) extending at least partially across the slot (22).
8. The invention of claim 7, wherein the second card (12) defines at least one recess (74), each positioned to receive a respective positioning member (34), and wherein the first card (16) is configured to abut without receiving each positioning member (34).
EP89305746A 1988-11-04 1989-06-07 Dual purpose card edge connector Expired - Lifetime EP0367373B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US26719988A 1988-11-04 1988-11-04
US267199 1989-04-17
US07/339,910 US4869672A (en) 1989-04-17 1989-04-17 Dual purpose card edge connector
US339910 1989-04-17

Publications (2)

Publication Number Publication Date
EP0367373A1 true EP0367373A1 (en) 1990-05-09
EP0367373B1 EP0367373B1 (en) 1995-09-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89305746A Expired - Lifetime EP0367373B1 (en) 1988-11-04 1989-06-07 Dual purpose card edge connector

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EP (1) EP0367373B1 (en)
JP (1) JPH0748393B2 (en)
KR (1) KR940004194B1 (en)
DE (1) DE68924126T2 (en)
ES (1) ES2076209T3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374904A2 (en) * 1988-12-21 1990-06-27 Burndy Corporation Bi-level card edge connector
EP0419818A1 (en) * 1989-09-25 1991-04-03 Robinson Nugent, Inc. Edge card connector having preloaded contacts
EP0642195A1 (en) * 1993-09-06 1995-03-08 F. Wieland Elektrische Industrie GmbH Edge connector
GB2414347A (en) * 2004-05-20 2005-11-23 Agilent Technologies Inc Connector for receiving two different counterparts
US8778495B2 (en) 2007-05-11 2014-07-15 Gerogia-Pacific Chemicals LLC Phenol-formaldehyde novolac resin having low concentration of free phenol

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163847A (en) * 1991-08-05 1992-11-17 Molex Incorporated Card edge connector assembly
JPH0660082U (en) * 1993-01-26 1994-08-19 ミツミ電機株式会社 Wiring board connection structure
JP2009178367A (en) * 2008-01-31 2009-08-13 Sumitomo Electric Ind Ltd Biosensor measuring device
JP2011142046A (en) * 2010-01-08 2011-07-21 D D K Ltd Connector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614714A (en) * 1969-11-21 1971-10-19 Rca Corp Edge connector with polarizing member

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614714A (en) * 1969-11-21 1971-10-19 Rca Corp Edge connector with polarizing member

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN. vol. 30, no. 8, January 1988, NEW YORK US pages 217 - 218; "Contractor expansion of electrical connectors." *
IBM TECHNICAL DISCLOSURE BULLETIN. vol. 31, no. 1, June 1988, NEW YORK US pages 191 - 192; "Edge connector with .050" center line spacing." *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374904A2 (en) * 1988-12-21 1990-06-27 Burndy Corporation Bi-level card edge connector
EP0374904A3 (en) * 1988-12-21 1991-09-04 Burndy Corporation Bi-level card edge connector
EP0419818A1 (en) * 1989-09-25 1991-04-03 Robinson Nugent, Inc. Edge card connector having preloaded contacts
US5013264A (en) * 1989-09-25 1991-05-07 Robinson Nugent, Inc. Edge card connector having preloaded contacts
EP0642195A1 (en) * 1993-09-06 1995-03-08 F. Wieland Elektrische Industrie GmbH Edge connector
GB2414347A (en) * 2004-05-20 2005-11-23 Agilent Technologies Inc Connector for receiving two different counterparts
US8778495B2 (en) 2007-05-11 2014-07-15 Gerogia-Pacific Chemicals LLC Phenol-formaldehyde novolac resin having low concentration of free phenol

Also Published As

Publication number Publication date
ES2076209T3 (en) 1995-11-01
DE68924126T2 (en) 1996-05-09
DE68924126D1 (en) 1995-10-12
JPH02199784A (en) 1990-08-08
KR940004194B1 (en) 1994-05-16
KR900008726A (en) 1990-06-04
EP0367373B1 (en) 1995-09-06
JPH0748393B2 (en) 1995-05-24

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