CA1222895A - Housing mountable on printed circuit board to interconnect fiber optic connectors - Google Patents
Housing mountable on printed circuit board to interconnect fiber optic connectorsInfo
- Publication number
- CA1222895A CA1222895A CA000425992A CA425992A CA1222895A CA 1222895 A CA1222895 A CA 1222895A CA 000425992 A CA000425992 A CA 000425992A CA 425992 A CA425992 A CA 425992A CA 1222895 A CA1222895 A CA 1222895A
- Authority
- CA
- Canada
- Prior art keywords
- housing
- fiber optic
- printed circuit
- circuit board
- ferrule
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4266—Thermal aspects, temperature control or temperature monitoring
- G02B6/4268—Cooling
- G02B6/4269—Cooling with heat sinks or radiation fins
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
ASTRACT:
A housing member has a profiled bore extending therethrough in one section of which a Ferrule member containing an electro-optic member is secured by a removable retaining clip member that also acts as a heat sink member. Another ferrule member of a fiber optic connector terminated onto a fiber optic transmission member is disposed in another section of the profiled bore and is latchably secured therein by spring latching members secured in the housing.
A housing member has a profiled bore extending therethrough in one section of which a Ferrule member containing an electro-optic member is secured by a removable retaining clip member that also acts as a heat sink member. Another ferrule member of a fiber optic connector terminated onto a fiber optic transmission member is disposed in another section of the profiled bore and is latchably secured therein by spring latching members secured in the housing.
Description
~2~g~
HOUSING MOUNTABLE ON PRINTED CIRCUIT BO~RD
TO INTERCONNECI' ~IBER OPTIC CONNEC'rORS
This invention relates -to connector housings and more particularly to housinys mountable on printed circuit boards to interconnect electro-optic devices and fiber optic connectors.
It is known to mount a housing on a printed circuit boaxd and in a profiled bore of which is disposed a ferrule mem-ber. A metal clip member secures the ferrule member within the pro-filed bore by being itself secured onto the housing and also operates as a heat sink for an electro-optic member within the ferrule member. A fiber optic connector including a ferrule member terminated onto a fiber optic transmission member is securably connected to the housing within the profiled bore to interconnect the electro-optic member and the fiber optic trans-mission member. The housing, ferrule member, metal clip, and electro-optic member are all secured together as a device mount-able onto a printed circuit board with no latching members for latchably securing a ferrule member of a fiber optic connector within the housing.
The present invention provides a housing for inter-connecting fiber optic connectors in a profiled bore extending through the housing, characterized by latching members which have mounting sections secured in said housing and spring members extending outwardly from said mounting sections and forwardly of one end of said housing and curving back toward one entrance to B
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said profiles bore, inwardly-directed ends of said spring members positioned adjacent sa:id one entrance and engageahle onto a shoulder of a ferrule member of a fiber optic connector that has been positioned into said profiled bore.
In a preferred embodiment, a retaining clip is provided for securing the ferrule in the housing~ The retaining clip has a body member and spring members extending outwardly from said body member and having inwardly-directed end members slideably engageable within recesses in said housing adjacent a second entrance to said profiled bore.
According to another aspect of the present invention, the spring latching members have legs that are frictionally dis-posed in holes in a printed circuit board to secure the housing in position on the board prior to being soldered in place thereon.
FIGURE 1 is a perspective, exploded view of a housing and its parts for interconnecting ferrule members to form a fiber optic connection.
FIGURE 2 is a perspecti~e view showing the housing and parts assembled and mounted on a printed circuit board with fiber optic connectors latchably secured therein.
FIGURE 3 is a part top plan view of the housing with a part of the housing broken away showing the latching members in engagement with the ferrule member of the fiber optic connector.
FIGURE 4 is a view taken along line 4-4 of Figure 2.
Figures 1 through 4 illustrate the in~ention which com-prises a housing member 10, spring latching members 12, and retain-B
8~
ing clip 14. Housing member 10 is preferab].y molded :Erom a suit able plastic material and has a proEiled bore 16 extending there-through in the form of frustoconical sections at each end thereof with a cylindrical section interconnecti.ng the frustoconical sections. The entrance to one end of profiled bore 16 has a substantially annular recess 18 which has a flat keying surface therein, whereas the other end of pro:Eiled bore 16 has a substan-tially annular recess 20 also with a flat keying surface therein.
Stop surfaces 22, 24 are located respectively at the intersections of annular recess 18 with one frustoconical section of profile bore 16 and the intersection of annular recess 20 with the other frustoconical section of profile bore 16.
; Slotc 26 extend through housing member 10 and have smaller dimensioned sections 28 with stop surfaces 30 separating the larger and smaller sections of slots 26~ Openings 32 are located in the sidewalls of housing member 10 and are in communi-cation with the larger sections of slots 26 and they terminate at the position of stop surfaces 30. Openings 32 extend along the walls of projections 34 that extend outwardly from the sides of housing member 10. Recesses 36, 38 extend inwardly from the sides of housing member 10 and are parallel to one another.
Projections 40, 42 extend outwardly from the bottom surface of housing member 10 with annular projections 44 extending outwardly from projections 42 and concentric therewith.
Latching members 12 are stamped and formed from a suit-able metal having desirable spring characteristics and each ~;228~
latching membe:r 12 incl.udes a mountiny section 46 from which extends a spring member 48 which includes a curved~back sect:ion 48A extending toward mounting section 46 and terminatlng in an inwardly-directed end 50. Projections 52 extend out~ardly from the top of mounting sections 46. Mounting legs 54 extend out-wardly from mounting sections 46 and contain arcuate projections 56 adjacent the outer ends thereoE.
Latching members 12 are securely mounted in slots 26 of housing member lO with mounting sections 46 positioned in the larger sections of slots 26 and bottoming against stop surfaces 30 with mounting legs 54 extending through the smaller sections 28 of slots 26 and extending -3a-i%o;PX~39.~
outwardly beyond thc bottom surface oE housing member 10. Sprlng membcrs 48 extend outwardly through openings 32 of housing member 10 and extend along -the sides thereof with the curved-back sections 48A extending toward annular recess 18 and terminating adjacent thereto with inwardly-directed ends 50 being posi-tioned adjacent annular recess 18. Projections 52 bite into housing member 10 thereby securing latching members 12 therewithin.
After spring latching members 12 have been secured within slots 26 of housing member ~0, housing member 10 can now be mounted onto printed circuit board 58 with arcuate projections 56 of mounting legs 54 frictionally disposed in holes 60 in printed circuit board 58 while annular projections 44 are posi-tioned within holes 62 therein. Arcuate projections 56 frictionally engage the walls of holes 60 thereby securing housing member lO in position on printed cir-cuit board 58 and mounting legs 54 extend slightly below a metal section 78 secured to board 58 to which mounting legs 54 are soldered thereby permanently securing housing member lO on printed circuit board 58. Projections 40, 42 position housing member 10 away from printed circuit board 58 for cleaning purposes.
Housing member lO is mounted on printed circuit board 58 adjacent electro optic device 64 of the type disclosed in United States Patent No.
4,186,996. Electro-optic device 64 can be either a light-transmitting device or a light-receiving device with one end of a light-transmitting fiber disposed adjacent the light-transmitting or light-receiving device which are encapsulated within a ferrule member with the light-transmitting fiber disposed in a bore extending through a front end of the ferrule ,nember. The ferrule member is formed from a suitable plastic have resilient characteristics that enables the front end having a frustoconical section 66 and cylindrical sec-tion 68 to be resiliently mated within the corresponding frustoconical and 8~
cylinclrical sections of profilecl hore 16 with annular sectior~ 70 being disposecl ~/ithin recess 20. A flat surfac~ 72 on annular section 70 mates with a corr~sponclirlcJ rlat surface \,vitllirl arlr)ular r~cess 20 to k.ey tile positioning of electro-optic device fi4 within the profiled bore 16 of housiny member 10. Electrical leads 74 of electro optic device 64 are electrically connected to conductive paths 76 on printed circuit board 58. When electrical leads 74 are flow-soldered to conductive paths 76, mounting legs 54 are also soldered to metal section 78 secured to printecl circuit board 58 thereby securing housing member 10 on printed circuit board 58. The heat from the flow-solderiny operation may deform projections 44 in sucll a way as to expand the end of projections 44 thereby riveting projections 44 to printed circuit boarcl 58 thereby providing an additional securing arrangement.
Retaining clip 1 Ll j5 stamped and formed frorn a suitable metal having spring characteristics and includes a body section 80 having a U-shaped opening 82 therein which ciears electrical lead 74 when body section 80 is disposed against electro-optic device 64. A stop member 84 iS at right angles to body section 80 and engages housing member 10 to position retaining clip 14 thereon. Spring arms 86 extend outwardly from body section 80 and inwardly-directed ends 88 which are slideably disposed in recesses 38 when retaining clip 14 is moved into a retaining position on housing member 10 to retain electro-optic device 64 within housing member - 10 and to apply an axial force thereto to properly resiliently seat frustoconical section 66 and cylindrical section 68 within the corresponding sections of profiled bore 16 as a result of bocly section 80 engaging the rear surface of electro-optic device 64.
.:
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l:f deslred, llousing me~mber :lO can be lnscrted w:ithin a rectangular opening of a mounting panel with projections 34 engaging one surface of the panel and a U-shaped clip (not shown) has its legs positioned within recesses 36 to retain housing member 10 in position within the opening of the panel.
Fiber optic connector 90 includes a plastic ferrule member 92 into which a fiber optic transmission member is positioned with transmission core member ~4 having its end coincident with the end of cylindrical section 96.
Frustoconical section 98 extends between cylindrical section 96 and annular section 100 which has a flat surface 102. Metal crimping ferrule 104 is crimped onto ferrule 92 and onto outer jacket 106 of the fiber optic trans-mission member thereby effectively terminating the fiber optic transmission member. The plastic material of which ferrule member 92 is made is suitably resilient so that frustoconical section 98 and cylindrical section 96 mateably and resiliently engage corresponding frustoconical section and cylindrical section of profiled bore 16 of housing member 10 when they are inserted thereinto thereby effecting an operable interconnection between fiber optic connector 90 and the light-transmitting fiber of electro-optic device 64.
Fiber optic connector 90 is latchably secured within the profiled bore of housing member 10 by means of spring members 48 with inwardly-directed ends 50 engaging onto the rear surface of annular section lO0 as illustrated in Figure 3 with annular section lO0 fitting within ar~nular recess 18 and flat surface 102 keyingly engaging the flat surface within recess 18. Spring members 48 are cammed outwardly when fiber optic con-nector 90 is being inserted into housing member lO so that fiber optic connector 90 can be inserted into housing member lO with low force and is 89~;
removed from housing momber 10 with substantially higher -forcos. Ylastic ferrule member 92 is of the type disclosed in United States Yatent No.
3,999,837~
Instead of electro-optic device 64 being positioned in recess 20 of housing member 10, a metal can type of electro-optic device identified as T0-18/46 can be bonded within recess 20. A T0-18 electro-optic device having a plastic cap is pressed fitted into recess 20. Retaining clip 14 serves the dual function of retaining the electro-optic device in position in housing member 10 and also defines a heat sink to carry heat away therefrom.
If desired; another fiber optic connector similar to that of fiber optic connector 90 can be positioned within recess 20 of housing member 10 and retained therein by retaining clip 14 to provide an optical coupling device for optically coupling the terminated ends of fiber optic transmission members.
HOUSING MOUNTABLE ON PRINTED CIRCUIT BO~RD
TO INTERCONNECI' ~IBER OPTIC CONNEC'rORS
This invention relates -to connector housings and more particularly to housinys mountable on printed circuit boards to interconnect electro-optic devices and fiber optic connectors.
It is known to mount a housing on a printed circuit boaxd and in a profiled bore of which is disposed a ferrule mem-ber. A metal clip member secures the ferrule member within the pro-filed bore by being itself secured onto the housing and also operates as a heat sink for an electro-optic member within the ferrule member. A fiber optic connector including a ferrule member terminated onto a fiber optic transmission member is securably connected to the housing within the profiled bore to interconnect the electro-optic member and the fiber optic trans-mission member. The housing, ferrule member, metal clip, and electro-optic member are all secured together as a device mount-able onto a printed circuit board with no latching members for latchably securing a ferrule member of a fiber optic connector within the housing.
The present invention provides a housing for inter-connecting fiber optic connectors in a profiled bore extending through the housing, characterized by latching members which have mounting sections secured in said housing and spring members extending outwardly from said mounting sections and forwardly of one end of said housing and curving back toward one entrance to B
~22Z8~
said profiles bore, inwardly-directed ends of said spring members positioned adjacent sa:id one entrance and engageahle onto a shoulder of a ferrule member of a fiber optic connector that has been positioned into said profiled bore.
In a preferred embodiment, a retaining clip is provided for securing the ferrule in the housing~ The retaining clip has a body member and spring members extending outwardly from said body member and having inwardly-directed end members slideably engageable within recesses in said housing adjacent a second entrance to said profiled bore.
According to another aspect of the present invention, the spring latching members have legs that are frictionally dis-posed in holes in a printed circuit board to secure the housing in position on the board prior to being soldered in place thereon.
FIGURE 1 is a perspective, exploded view of a housing and its parts for interconnecting ferrule members to form a fiber optic connection.
FIGURE 2 is a perspecti~e view showing the housing and parts assembled and mounted on a printed circuit board with fiber optic connectors latchably secured therein.
FIGURE 3 is a part top plan view of the housing with a part of the housing broken away showing the latching members in engagement with the ferrule member of the fiber optic connector.
FIGURE 4 is a view taken along line 4-4 of Figure 2.
Figures 1 through 4 illustrate the in~ention which com-prises a housing member 10, spring latching members 12, and retain-B
8~
ing clip 14. Housing member 10 is preferab].y molded :Erom a suit able plastic material and has a proEiled bore 16 extending there-through in the form of frustoconical sections at each end thereof with a cylindrical section interconnecti.ng the frustoconical sections. The entrance to one end of profiled bore 16 has a substantially annular recess 18 which has a flat keying surface therein, whereas the other end of pro:Eiled bore 16 has a substan-tially annular recess 20 also with a flat keying surface therein.
Stop surfaces 22, 24 are located respectively at the intersections of annular recess 18 with one frustoconical section of profile bore 16 and the intersection of annular recess 20 with the other frustoconical section of profile bore 16.
; Slotc 26 extend through housing member 10 and have smaller dimensioned sections 28 with stop surfaces 30 separating the larger and smaller sections of slots 26~ Openings 32 are located in the sidewalls of housing member 10 and are in communi-cation with the larger sections of slots 26 and they terminate at the position of stop surfaces 30. Openings 32 extend along the walls of projections 34 that extend outwardly from the sides of housing member 10. Recesses 36, 38 extend inwardly from the sides of housing member 10 and are parallel to one another.
Projections 40, 42 extend outwardly from the bottom surface of housing member 10 with annular projections 44 extending outwardly from projections 42 and concentric therewith.
Latching members 12 are stamped and formed from a suit-able metal having desirable spring characteristics and each ~;228~
latching membe:r 12 incl.udes a mountiny section 46 from which extends a spring member 48 which includes a curved~back sect:ion 48A extending toward mounting section 46 and terminatlng in an inwardly-directed end 50. Projections 52 extend out~ardly from the top of mounting sections 46. Mounting legs 54 extend out-wardly from mounting sections 46 and contain arcuate projections 56 adjacent the outer ends thereoE.
Latching members 12 are securely mounted in slots 26 of housing member lO with mounting sections 46 positioned in the larger sections of slots 26 and bottoming against stop surfaces 30 with mounting legs 54 extending through the smaller sections 28 of slots 26 and extending -3a-i%o;PX~39.~
outwardly beyond thc bottom surface oE housing member 10. Sprlng membcrs 48 extend outwardly through openings 32 of housing member 10 and extend along -the sides thereof with the curved-back sections 48A extending toward annular recess 18 and terminating adjacent thereto with inwardly-directed ends 50 being posi-tioned adjacent annular recess 18. Projections 52 bite into housing member 10 thereby securing latching members 12 therewithin.
After spring latching members 12 have been secured within slots 26 of housing member ~0, housing member 10 can now be mounted onto printed circuit board 58 with arcuate projections 56 of mounting legs 54 frictionally disposed in holes 60 in printed circuit board 58 while annular projections 44 are posi-tioned within holes 62 therein. Arcuate projections 56 frictionally engage the walls of holes 60 thereby securing housing member lO in position on printed cir-cuit board 58 and mounting legs 54 extend slightly below a metal section 78 secured to board 58 to which mounting legs 54 are soldered thereby permanently securing housing member lO on printed circuit board 58. Projections 40, 42 position housing member 10 away from printed circuit board 58 for cleaning purposes.
Housing member lO is mounted on printed circuit board 58 adjacent electro optic device 64 of the type disclosed in United States Patent No.
4,186,996. Electro-optic device 64 can be either a light-transmitting device or a light-receiving device with one end of a light-transmitting fiber disposed adjacent the light-transmitting or light-receiving device which are encapsulated within a ferrule member with the light-transmitting fiber disposed in a bore extending through a front end of the ferrule ,nember. The ferrule member is formed from a suitable plastic have resilient characteristics that enables the front end having a frustoconical section 66 and cylindrical sec-tion 68 to be resiliently mated within the corresponding frustoconical and 8~
cylinclrical sections of profilecl hore 16 with annular sectior~ 70 being disposecl ~/ithin recess 20. A flat surfac~ 72 on annular section 70 mates with a corr~sponclirlcJ rlat surface \,vitllirl arlr)ular r~cess 20 to k.ey tile positioning of electro-optic device fi4 within the profiled bore 16 of housiny member 10. Electrical leads 74 of electro optic device 64 are electrically connected to conductive paths 76 on printed circuit board 58. When electrical leads 74 are flow-soldered to conductive paths 76, mounting legs 54 are also soldered to metal section 78 secured to printecl circuit board 58 thereby securing housing member 10 on printed circuit board 58. The heat from the flow-solderiny operation may deform projections 44 in sucll a way as to expand the end of projections 44 thereby riveting projections 44 to printed circuit boarcl 58 thereby providing an additional securing arrangement.
Retaining clip 1 Ll j5 stamped and formed frorn a suitable metal having spring characteristics and includes a body section 80 having a U-shaped opening 82 therein which ciears electrical lead 74 when body section 80 is disposed against electro-optic device 64. A stop member 84 iS at right angles to body section 80 and engages housing member 10 to position retaining clip 14 thereon. Spring arms 86 extend outwardly from body section 80 and inwardly-directed ends 88 which are slideably disposed in recesses 38 when retaining clip 14 is moved into a retaining position on housing member 10 to retain electro-optic device 64 within housing member - 10 and to apply an axial force thereto to properly resiliently seat frustoconical section 66 and cylindrical section 68 within the corresponding sections of profiled bore 16 as a result of bocly section 80 engaging the rear surface of electro-optic device 64.
.:
~Z~,21 39S
l:f deslred, llousing me~mber :lO can be lnscrted w:ithin a rectangular opening of a mounting panel with projections 34 engaging one surface of the panel and a U-shaped clip (not shown) has its legs positioned within recesses 36 to retain housing member 10 in position within the opening of the panel.
Fiber optic connector 90 includes a plastic ferrule member 92 into which a fiber optic transmission member is positioned with transmission core member ~4 having its end coincident with the end of cylindrical section 96.
Frustoconical section 98 extends between cylindrical section 96 and annular section 100 which has a flat surface 102. Metal crimping ferrule 104 is crimped onto ferrule 92 and onto outer jacket 106 of the fiber optic trans-mission member thereby effectively terminating the fiber optic transmission member. The plastic material of which ferrule member 92 is made is suitably resilient so that frustoconical section 98 and cylindrical section 96 mateably and resiliently engage corresponding frustoconical section and cylindrical section of profiled bore 16 of housing member 10 when they are inserted thereinto thereby effecting an operable interconnection between fiber optic connector 90 and the light-transmitting fiber of electro-optic device 64.
Fiber optic connector 90 is latchably secured within the profiled bore of housing member 10 by means of spring members 48 with inwardly-directed ends 50 engaging onto the rear surface of annular section lO0 as illustrated in Figure 3 with annular section lO0 fitting within ar~nular recess 18 and flat surface 102 keyingly engaging the flat surface within recess 18. Spring members 48 are cammed outwardly when fiber optic con-nector 90 is being inserted into housing member lO so that fiber optic connector 90 can be inserted into housing member lO with low force and is 89~;
removed from housing momber 10 with substantially higher -forcos. Ylastic ferrule member 92 is of the type disclosed in United States Yatent No.
3,999,837~
Instead of electro-optic device 64 being positioned in recess 20 of housing member 10, a metal can type of electro-optic device identified as T0-18/46 can be bonded within recess 20. A T0-18 electro-optic device having a plastic cap is pressed fitted into recess 20. Retaining clip 14 serves the dual function of retaining the electro-optic device in position in housing member 10 and also defines a heat sink to carry heat away therefrom.
If desired; another fiber optic connector similar to that of fiber optic connector 90 can be positioned within recess 20 of housing member 10 and retained therein by retaining clip 14 to provide an optical coupling device for optically coupling the terminated ends of fiber optic transmission members.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A housing for interconnecting fiber optic connectors in a profiled bore extending through the housing, characterized by latching members which have mounting sections secured in said housing and spring members extending outwardly from said mounting sections and forwardly of one end of said housing and curving back toward one entrance to said profiled bore, inwardly-directed ends of said spring members positioned adjacent said one entrance and engageable onto a shoulder of a ferrule member of a fiber optic connector that has been positioned into said profiled bore.
2. A housing as set forth in claim 1 characterized by a retaining clip for securing a said ferrule member in said housing, the retaining clip having a body member and spring members exten-ding outwardly from said body member and having inwardly-directed end members slideably engageable within recesses in said housing adjacent a second entrance to said profiled bore.
3. A housing as set forth in claim 2 characterized in that said body member includes a stop member for engagement with said housing to limit movement of said inwardly-directed end members along said recesses and said body member having a U-shaped open-ing.
4. A housing as set forth in claim 1 characterized in that said mounting sections have mounting legs extending outwardly therefrom and from a bottom surface of said housing for engage-ment with holes in a printed circuit board to mount said housing thereon.
5. A housing as set forth in claim 4 characterized in that said bottom surface of said housing includes projections to space said housing from said printed circuit board.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/368,949 US4547039A (en) | 1982-04-16 | 1982-04-16 | Housing mountable on printed circuit board to interconnect fiber optic connectors |
US368,949 | 1982-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1222895A true CA1222895A (en) | 1987-06-16 |
Family
ID=23453429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000425992A Expired CA1222895A (en) | 1982-04-16 | 1983-04-15 | Housing mountable on printed circuit board to interconnect fiber optic connectors |
Country Status (8)
Country | Link |
---|---|
US (1) | US4547039A (en) |
EP (1) | EP0092338B1 (en) |
JP (1) | JPS58187908A (en) |
BR (1) | BR8301436A (en) |
CA (1) | CA1222895A (en) |
DE (1) | DE3381120D1 (en) |
IE (1) | IE55336B1 (en) |
MX (1) | MX159903A (en) |
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-
1982
- 1982-04-16 US US06/368,949 patent/US4547039A/en not_active Expired - Fee Related
-
1983
- 1983-03-16 MX MX196598A patent/MX159903A/en unknown
- 1983-03-22 BR BR8301436A patent/BR8301436A/en not_active IP Right Cessation
- 1983-04-05 EP EP83301902A patent/EP0092338B1/en not_active Expired - Lifetime
- 1983-04-05 DE DE8383301902T patent/DE3381120D1/en not_active Expired - Fee Related
- 1983-04-08 IE IE803/83A patent/IE55336B1/en unknown
- 1983-04-15 CA CA000425992A patent/CA1222895A/en not_active Expired
- 1983-04-15 JP JP58065788A patent/JPS58187908A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0092338B1 (en) | 1990-01-17 |
JPS58187908A (en) | 1983-11-02 |
BR8301436A (en) | 1983-11-29 |
IE55336B1 (en) | 1990-08-15 |
JPH0153764B2 (en) | 1989-11-15 |
EP0092338A2 (en) | 1983-10-26 |
MX159903A (en) | 1989-09-29 |
IE830803L (en) | 1983-10-16 |
US4547039A (en) | 1985-10-15 |
DE3381120D1 (en) | 1990-02-22 |
EP0092338A3 (en) | 1985-11-06 |
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