CA1099352A - Electrical connector for circuit board - Google Patents
Electrical connector for circuit boardInfo
- Publication number
- CA1099352A CA1099352A CA319,193A CA319193A CA1099352A CA 1099352 A CA1099352 A CA 1099352A CA 319193 A CA319193 A CA 319193A CA 1099352 A CA1099352 A CA 1099352A
- Authority
- CA
- Canada
- Prior art keywords
- substrate
- connector according
- section
- contacts
- side section
- 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
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
ELECTRICAL CONNECTOR FOR CIRCUIT BOARD
ABSTRACT OF THE DISCLOSURE
A connector for making electrical contact from an external circuit to a planar substrate having conductive portions on at least one face thereof includes an insulating housing having a walled section forming an interior area for receiving the substrate. The walled section includes a side section adapted to be removed for permitting removal of the substrate. A plurality of contacts are positioned within the interior area for making electrical contact with the conductive portions on the substrate.
ABSTRACT OF THE DISCLOSURE
A connector for making electrical contact from an external circuit to a planar substrate having conductive portions on at least one face thereof includes an insulating housing having a walled section forming an interior area for receiving the substrate. The walled section includes a side section adapted to be removed for permitting removal of the substrate. A plurality of contacts are positioned within the interior area for making electrical contact with the conductive portions on the substrate.
Description
lV~?935Z
~o I ~-The present invention relates to an electrical connector !
03 for making elec~rical contact between a substrate and an 04 external circuit.
Ceramic substrates or printed wiring boards have inter-06 grated circuit devices or electronic components mounted 07 thereon. Conductive portions extend from ~he miniturized 08 circuit "chip" or electronic component to the edges of the 09 substrate on either one or both ~aces thereof. The substrate is then connected to an external circuit- In many prior 11 applications the ceramie substrate is mounted in the housing 12 iin a plane substantially normal to the plane of the board 13i whereby one edge of the substrate or board is held by the 14~lhousing.
In another type o connector, it i5 desirable to provide 16 11 electrical connection with the circuit board along one or 17~,more edges or sides of a rectangular or square substrate.
18 ~IIn connectors of this type a substrate is circumscribed by a l9~jhousing on all four sides of a rectangular or square substrate.
20l, To provide connection between a substrate and an 21 external circuit or a plurality of substrates lying in sub-22 stanially common parallel planes, prior art has concen-23 trated on those methods wberein leads are clamped and 24 usually bonded to the ceramic or dielectric substrates.
25~ The leads are then bent or preformed at right angles to 26 permit plugging into a header or into a printed circuit 27 board.
28 ~ S. Patent 3,689,694 to Cox, et al describes such a 29 ; device where C-clamps which grip the edges have depending 30 ii 31 i1 -2 32 jl , ~ 9~15Z
oo~
01¦1 portions at right angles to the substrate- A connector is 02 not provided which provides for a convenient insertion and 03 removal of a substrate in a ~onnectoru 04 U. S. Patent 3,865,450 describes a connector of a type 05 having a centrally located substrate receiving 20ne and 06 having cantilevered arms for contacting the subst~ate.
07 Locking blocks are provided for holding the substrate in 08 position.
U. S. Patent 3,910,642 Pauza, et al describes the conneetor where the contact areas are at the edges of a 11 substrate. Upon insertion of the substrate into the housing, 12 ll spring portions engage edges of the substrate. A strap is l~lprovided for securing the circuit within the housing~
14 SUMMA~Y OF THE INVENTION
;, , 15ll According to the present invention; there is provided 16 ll a connector for making electri~al contact to an external 17 circuit and a planar ~ubstrate having conductive portions 18 on at least one face thereof, said connector comprising an 19 `insulating housing haviny a walled section forming an interior area for receiving said substrate, said walled section 21'lincluding a side section adapted to be removed and a plu~ality 22 of contacts positioned within said interior area for making 23 electrical contact with conductive portions on said substrate.
, The connector also includes a plurality of housing~ ar-25` ranged in stack relationship.
~6 Accordingly, it is an object of the present invention 27 to provide a new and improved connector for substrates which 28 provides removal and replacement of a substrate from a side 29 of the housing.
- !.
1~9352 ~o l i 01 Other objects and advantages of the present invention 02 will become apparent from the following description.
04 DESCRIPTION OF THE PREFERRED E~IBODIMENT
Referring to Fig. 1, the connector 11 comprises an 05 insulating housing 13 formed as a walled section circum-06 scribing or surrounding an interior area 15. The walled 07 SeCtiQn 17 includes four walls arranged to form the rectan~
08 gular or square shaped housing.
09 The substrate 19 is of a conventional type integrated circuit chip or printed~wiring board. The circuit chip (not 11 shown) is located in the center portion on one or both sides 12'l, of the planar substrate 19. Leads which provide for electri-, 13,l cal connection radiate from the chip, chips or electronic 14 ~components and terminate at the edges of the substrate 19.
15` Various substrates having different configurations may be 16,,utilized with the connector of the present invention. The 17 substrate 19, as illustrated in Fi~. 1, is of generally 18 'rectangular or square shape with parallel faces 21, 23 19 Imeeting side surfaces to form edges. One method of installing the substrate into the housing comprises moving the substrate 21llsubstantially normal to its plane into the interior area lS
22 formed ~y the walled section 17.
The housing 13 includes an upright section 25 at each 24` of the corners thereo and connecting the wall therebetween.
25 ~The walled section 17 includes a removable side section 29 26, having a top surface 33 and bottom surface 3S o The bottom 27 surface 35 meets with the upper surface of side wall 27 28 which extends substantially normal to the upright sections 29`
31i~
ii l ll ~ 10~935Z
00 131,.2i and therebetween. The complimen~ary surfaces 35 and 01 137 include ridges or dove tails 39 which mate with respective ~2 recesses 41 for maintaining proper alignment of the side 03 section 29. Fasteners 43 are provided for securing side 04 section 29 to the walled section 27. As illustrated in Fig. .
05 1, the fastening means 43 is a hold down screw which is 06 threaded into a section of the wall 27 located directly 07 behind the removable section 33. For reasons,hereinafter 08 explained, it is preferable ~hat at least three of the walls 09 of the walled section 17 be provided with a removable side section as described above with respect to side section 29.
11 The walled section 17 includes access area 45 which 12 permit removal of substrate 19 in a direction substantially 13 .along its own plane and through the access areas or opening 14 45 in ~he walls. More particularlyt' the access area 45 and lS side wall 27 are between uprights 31 and 25. With side 16,,section 29 in place, top surface 33 forms a lower boundary 17.~for the access area 45. When the connector 11 is formed by 18 stacking several housings similar to housing 13, a surface 19 corresponding to surface 34 forms the upper boundary for the access area 45. As illustrated in FigO 1, the walled section ~1 17 includes means 24 for keying and polarizing substrate l9o 22 The polariæing means includes complimentary key 24 and key 23 way 26 on the walled section 17 and subs~rate 19.~
24 The removable side sections, or as more particularly illustrated in the drawings, removable side section 29 26, includes a plurality of electrical contacts 55 mounted 27 :
28 ~
3~
I
Ol thereon. The details of contact 55 is shown in more detail 02 in Figure 2. Contact 55 includes a projecting portion 57 at 03 one end thereof which is adapted to extend into the interior 04 area 15 for contacting the conductive portions of said Q5 substrate l9. The other end 59 extends external of the side 06 section for contacting an external circuit (not shown). An 07 intermediate portion 61 is provided for securing the contact 08 57 to the side section 29. The projecting portion 57 is 09 adapted to be resiliently biased over the top face 21 of substrate 19. When the substrate l9 is inserted into the ll housing in a direction normal to its plane an edge portion 12 of the substrate contacts the projecting portion 57 causing 131 the projecting portion 57 to move outwardly toward side 14i section 29. As the top face 21 of substrate l9 moves to a 15,'point just below projecting portion 57, the projecting 16¦lportion 57 snaps or i5 biased inwardly to engage or grip the 17 1I top face 21 of the substrate. Upward movement of the substrate 18'1l9 is thus restrained. The projecting portion 57 is formed l91 as a bend in the contact 55 so that the projecting portion 20 ` 57 extends inwardly and downwardly at an acute angle. The Il l 21 projecting portion makes electrlcal contact with a respective 22 ,electrically conductive strip on the ~ubstrate l9. Means 23 are provided for resiliently suppor~ing the other face 23 of ~4 substrate l9. The supporting means includes a plurality of contacts 63 having one end 67 projecting into the interior 26 area 15 for engaging substrate l9o A por~ion 69 intermediate 27'
~o I ~-The present invention relates to an electrical connector !
03 for making elec~rical contact between a substrate and an 04 external circuit.
Ceramic substrates or printed wiring boards have inter-06 grated circuit devices or electronic components mounted 07 thereon. Conductive portions extend from ~he miniturized 08 circuit "chip" or electronic component to the edges of the 09 substrate on either one or both ~aces thereof. The substrate is then connected to an external circuit- In many prior 11 applications the ceramie substrate is mounted in the housing 12 iin a plane substantially normal to the plane of the board 13i whereby one edge of the substrate or board is held by the 14~lhousing.
In another type o connector, it i5 desirable to provide 16 11 electrical connection with the circuit board along one or 17~,more edges or sides of a rectangular or square substrate.
18 ~IIn connectors of this type a substrate is circumscribed by a l9~jhousing on all four sides of a rectangular or square substrate.
20l, To provide connection between a substrate and an 21 external circuit or a plurality of substrates lying in sub-22 stanially common parallel planes, prior art has concen-23 trated on those methods wberein leads are clamped and 24 usually bonded to the ceramic or dielectric substrates.
25~ The leads are then bent or preformed at right angles to 26 permit plugging into a header or into a printed circuit 27 board.
28 ~ S. Patent 3,689,694 to Cox, et al describes such a 29 ; device where C-clamps which grip the edges have depending 30 ii 31 i1 -2 32 jl , ~ 9~15Z
oo~
01¦1 portions at right angles to the substrate- A connector is 02 not provided which provides for a convenient insertion and 03 removal of a substrate in a ~onnectoru 04 U. S. Patent 3,865,450 describes a connector of a type 05 having a centrally located substrate receiving 20ne and 06 having cantilevered arms for contacting the subst~ate.
07 Locking blocks are provided for holding the substrate in 08 position.
U. S. Patent 3,910,642 Pauza, et al describes the conneetor where the contact areas are at the edges of a 11 substrate. Upon insertion of the substrate into the housing, 12 ll spring portions engage edges of the substrate. A strap is l~lprovided for securing the circuit within the housing~
14 SUMMA~Y OF THE INVENTION
;, , 15ll According to the present invention; there is provided 16 ll a connector for making electri~al contact to an external 17 circuit and a planar ~ubstrate having conductive portions 18 on at least one face thereof, said connector comprising an 19 `insulating housing haviny a walled section forming an interior area for receiving said substrate, said walled section 21'lincluding a side section adapted to be removed and a plu~ality 22 of contacts positioned within said interior area for making 23 electrical contact with conductive portions on said substrate.
, The connector also includes a plurality of housing~ ar-25` ranged in stack relationship.
~6 Accordingly, it is an object of the present invention 27 to provide a new and improved connector for substrates which 28 provides removal and replacement of a substrate from a side 29 of the housing.
- !.
1~9352 ~o l i 01 Other objects and advantages of the present invention 02 will become apparent from the following description.
04 DESCRIPTION OF THE PREFERRED E~IBODIMENT
Referring to Fig. 1, the connector 11 comprises an 05 insulating housing 13 formed as a walled section circum-06 scribing or surrounding an interior area 15. The walled 07 SeCtiQn 17 includes four walls arranged to form the rectan~
08 gular or square shaped housing.
09 The substrate 19 is of a conventional type integrated circuit chip or printed~wiring board. The circuit chip (not 11 shown) is located in the center portion on one or both sides 12'l, of the planar substrate 19. Leads which provide for electri-, 13,l cal connection radiate from the chip, chips or electronic 14 ~components and terminate at the edges of the substrate 19.
15` Various substrates having different configurations may be 16,,utilized with the connector of the present invention. The 17 substrate 19, as illustrated in Fi~. 1, is of generally 18 'rectangular or square shape with parallel faces 21, 23 19 Imeeting side surfaces to form edges. One method of installing the substrate into the housing comprises moving the substrate 21llsubstantially normal to its plane into the interior area lS
22 formed ~y the walled section 17.
The housing 13 includes an upright section 25 at each 24` of the corners thereo and connecting the wall therebetween.
25 ~The walled section 17 includes a removable side section 29 26, having a top surface 33 and bottom surface 3S o The bottom 27 surface 35 meets with the upper surface of side wall 27 28 which extends substantially normal to the upright sections 29`
31i~
ii l ll ~ 10~935Z
00 131,.2i and therebetween. The complimen~ary surfaces 35 and 01 137 include ridges or dove tails 39 which mate with respective ~2 recesses 41 for maintaining proper alignment of the side 03 section 29. Fasteners 43 are provided for securing side 04 section 29 to the walled section 27. As illustrated in Fig. .
05 1, the fastening means 43 is a hold down screw which is 06 threaded into a section of the wall 27 located directly 07 behind the removable section 33. For reasons,hereinafter 08 explained, it is preferable ~hat at least three of the walls 09 of the walled section 17 be provided with a removable side section as described above with respect to side section 29.
11 The walled section 17 includes access area 45 which 12 permit removal of substrate 19 in a direction substantially 13 .along its own plane and through the access areas or opening 14 45 in ~he walls. More particularlyt' the access area 45 and lS side wall 27 are between uprights 31 and 25. With side 16,,section 29 in place, top surface 33 forms a lower boundary 17.~for the access area 45. When the connector 11 is formed by 18 stacking several housings similar to housing 13, a surface 19 corresponding to surface 34 forms the upper boundary for the access area 45. As illustrated in FigO 1, the walled section ~1 17 includes means 24 for keying and polarizing substrate l9o 22 The polariæing means includes complimentary key 24 and key 23 way 26 on the walled section 17 and subs~rate 19.~
24 The removable side sections, or as more particularly illustrated in the drawings, removable side section 29 26, includes a plurality of electrical contacts 55 mounted 27 :
28 ~
3~
I
Ol thereon. The details of contact 55 is shown in more detail 02 in Figure 2. Contact 55 includes a projecting portion 57 at 03 one end thereof which is adapted to extend into the interior 04 area 15 for contacting the conductive portions of said Q5 substrate l9. The other end 59 extends external of the side 06 section for contacting an external circuit (not shown). An 07 intermediate portion 61 is provided for securing the contact 08 57 to the side section 29. The projecting portion 57 is 09 adapted to be resiliently biased over the top face 21 of substrate 19. When the substrate l9 is inserted into the ll housing in a direction normal to its plane an edge portion 12 of the substrate contacts the projecting portion 57 causing 131 the projecting portion 57 to move outwardly toward side 14i section 29. As the top face 21 of substrate l9 moves to a 15,'point just below projecting portion 57, the projecting 16¦lportion 57 snaps or i5 biased inwardly to engage or grip the 17 1I top face 21 of the substrate. Upward movement of the substrate 18'1l9 is thus restrained. The projecting portion 57 is formed l91 as a bend in the contact 55 so that the projecting portion 20 ` 57 extends inwardly and downwardly at an acute angle. The Il l 21 projecting portion makes electrlcal contact with a respective 22 ,electrically conductive strip on the ~ubstrate l9. Means 23 are provided for resiliently suppor~ing the other face 23 of ~4 substrate l9. The supporting means includes a plurality of contacts 63 having one end 67 projecting into the interior 26 area 15 for engaging substrate l9o A por~ion 69 intermediate 27'
2~ -6-!i`
I' . , ., 10~935Z
00 ends 67 and 71 is secured to side wall 27. I desired, face ¦
01 23 of substrate 19 can be provided with conductive portions 02 for contacting contact 63. Engagement of end 67 with ~ub-03 `strate 19 is shown in Figure 2. When such electrical con-04 nection is made by end 67, the other end 71 extends external 0~ to wall 27 for providing electrical connection to an externall 06 circuit. End 67 of contact 63 is resiliently biased upwardly !
07 and inwardly to provide a yieldable support to face 23 of 08 substrate 19. End 67 is opposed to and faces the projecting ¦
09 portion 57 and cooperation therewith results in the substrate¦
19 being firmly held there between. The contacts 55 and 11 contacts 63 are aligned in substantially parallel spaced 12 apart rows.
13j, The connector 11 can comprise a plurality of housings 14, 13, 73, and 75 arranged in stacked relationship. The stacked 15 1l connector can be constructed by inserting a substrate 19 16 into the interior area of a bo~tom hsusing 75. The other 171 housing 73 is then stacked on top of bottom housing 75 so 18' that a bottom surface o the latter rest on top surfaces of l9 'the upright sections of the former. Proper means are provided for securely connecting the housings. An appropriate sub-21, strate 19 is then inserted in the top housing 73. In a 22 similar manner housing 13 is arranged in stac~ relationship 23 with housing 73 which is then intermediate housings 13 and 24 75. Substrates 19 can be inserted after connector 11 is assembled. The present invention is particularly suited for 26 connecting the ends o the contacts which project or extend 27 'exterior to the walled section 17 by a solderable wire 28`
2g ~7~
., ~
31 ~
:Lo~s3sz D0 wrapping procedure. The wrapping can be done before or 01 after assembly of the stacked frame. As illustrated in 02 Figure 3 side sections 79 can be arranged adjacent to each 03 other so that the wrappable portions 59 and 71 of contacts 04 55 and 63 respectively project normal to the wrapping plane.
05 The individual side sections can be wrapped with wire 81 n6 with a machine as is done in preparing a conventional solder-07 less wrap circuit panel. After termination with wires 81, 08 the side sections 79 are inserted in their respective walls 09 to form the stacked member.
During assembly, the subs~ra~e 19 can be inserted into 11 the housing 13 in a direction normal to its plane. If 121 another substrate in a housing is positioned over housing 13~'113 and substrate 19, substrate lg can be conveniently 14 li removed by loosening side section 23. Side section 29 must 151 be replaced before inserting substrate 19. It is prefer 16¦¦able that each insulating housing 13 include at least three 17 !I side walls having removable side sections similar to side 18,~section 29. It is not necessary to completely remove a side l9l~section 29 but to merely loosen the side sections so that 20'lprojecting portions of the contacts such as represented by 21',the projecting portion 57 shown in the drawings~ can be 22 moved out of engagement with the top face 21 o~ substrate 23" 19. This results in a downwardly biased ends of the opposite~
24 contacts as represented at 67-in the drawings urging substrate 19 upwardly. By reaching through the access area 45 with a 26" probe or tweezer type tool, the substrate can be removed 27 ~through an access opening even when housing 13 is positioned 28' below another housing.
29 _~
!l 30 `
,'j '
I' . , ., 10~935Z
00 ends 67 and 71 is secured to side wall 27. I desired, face ¦
01 23 of substrate 19 can be provided with conductive portions 02 for contacting contact 63. Engagement of end 67 with ~ub-03 `strate 19 is shown in Figure 2. When such electrical con-04 nection is made by end 67, the other end 71 extends external 0~ to wall 27 for providing electrical connection to an externall 06 circuit. End 67 of contact 63 is resiliently biased upwardly !
07 and inwardly to provide a yieldable support to face 23 of 08 substrate 19. End 67 is opposed to and faces the projecting ¦
09 portion 57 and cooperation therewith results in the substrate¦
19 being firmly held there between. The contacts 55 and 11 contacts 63 are aligned in substantially parallel spaced 12 apart rows.
13j, The connector 11 can comprise a plurality of housings 14, 13, 73, and 75 arranged in stacked relationship. The stacked 15 1l connector can be constructed by inserting a substrate 19 16 into the interior area of a bo~tom hsusing 75. The other 171 housing 73 is then stacked on top of bottom housing 75 so 18' that a bottom surface o the latter rest on top surfaces of l9 'the upright sections of the former. Proper means are provided for securely connecting the housings. An appropriate sub-21, strate 19 is then inserted in the top housing 73. In a 22 similar manner housing 13 is arranged in stac~ relationship 23 with housing 73 which is then intermediate housings 13 and 24 75. Substrates 19 can be inserted after connector 11 is assembled. The present invention is particularly suited for 26 connecting the ends o the contacts which project or extend 27 'exterior to the walled section 17 by a solderable wire 28`
2g ~7~
., ~
31 ~
:Lo~s3sz D0 wrapping procedure. The wrapping can be done before or 01 after assembly of the stacked frame. As illustrated in 02 Figure 3 side sections 79 can be arranged adjacent to each 03 other so that the wrappable portions 59 and 71 of contacts 04 55 and 63 respectively project normal to the wrapping plane.
05 The individual side sections can be wrapped with wire 81 n6 with a machine as is done in preparing a conventional solder-07 less wrap circuit panel. After termination with wires 81, 08 the side sections 79 are inserted in their respective walls 09 to form the stacked member.
During assembly, the subs~ra~e 19 can be inserted into 11 the housing 13 in a direction normal to its plane. If 121 another substrate in a housing is positioned over housing 13~'113 and substrate 19, substrate lg can be conveniently 14 li removed by loosening side section 23. Side section 29 must 151 be replaced before inserting substrate 19. It is prefer 16¦¦able that each insulating housing 13 include at least three 17 !I side walls having removable side sections similar to side 18,~section 29. It is not necessary to completely remove a side l9l~section 29 but to merely loosen the side sections so that 20'lprojecting portions of the contacts such as represented by 21',the projecting portion 57 shown in the drawings~ can be 22 moved out of engagement with the top face 21 o~ substrate 23" 19. This results in a downwardly biased ends of the opposite~
24 contacts as represented at 67-in the drawings urging substrate 19 upwardly. By reaching through the access area 45 with a 26" probe or tweezer type tool, the substrate can be removed 27 ~through an access opening even when housing 13 is positioned 28' below another housing.
29 _~
!l 30 `
,'j '
Claims (17)
1. A connector for making electrical contact to an external circuit and a planar substrate having conductive portions on at least one face thereof, said connector compri-sing an insulating housing having a walled section forming an interior area for receiving said substrate, said walled section including a side section adapted to be removed for permitting access to said interior area and a plurality of contacts positioned within said interior area for making electrical contact with conductive portions on said substrate.
2. A connector according to claim 1 wherein said side section includes a plurality of first contacts mounted thereto, each of said first contacts having one end adapted to extend into said interior area for contacting the conductive portions of said substrate and another end extending external of said side section for contacting an external circuit, and an intermediate portion for securing said contact to said side section.
3. A connector according to claim 2 wherein said walled section includes an access area adjacent said side section for permitting removal and replacement of said substrate there through.
4. A connector according to claim 3 including fastening means for securing said side section to said walled section.
5. A connector according to claim 3 wherein said walled section comprises four walls forming a rectangular housing circumscribing said interior area.
6. A connector according to claim 5 wherein at least one of said walls includes a side section.
7. A connector according to claim 6 wherein at least three of said walls includes a side section.
8. A connector according to claim 6 wherein said one of said walls includes upright section, one upright section on either side thereof and said side section includes a top surface, said access area being formed between said upright sections.
9. A connector according to claim 6 wherein said one end of said first contacts includes a projecting portion adapted to yieldably receive a substrate within said walled section.
10. A connector according to claim 9 wherein said projecting portion extends downwardly and inwardly from said side section for engaging one face of said substrate.
11. A connector according to claim 9 wherein one of said side walls includes an upper surface extending normal to said upright sections and there between, said side section includes a bottom surface, said upper and bottom surfaces including ridges and complimentary recesses for positioning said side section.
12. A connector according to claim 9 wherein said connector includes means for resiliently supporting the other face of said substrate.
13. A connector according to claim 12 wherein said resilient supporting means includes a porality of second contacts, each of said second contacts having one end project-ing into said interior area for engaging the other face of said substrate.
14. A connector according to claim 13 wherein each of said second contacts includes another end projecting external of said walled section and an intermediate portion for securing said contacts to said walled section, said one end being adapted to contact conductive portions on said other face and said other end adapted to make electrical connection with external circuit.
15. A connector according to claim 14 wherein said first and second contacts are aligned in substantially parallel rows.
16. A connector according to claim 14 wherein each of second contacts have one end extending inwardly and upwardly for resiliently contacting said other face.
17. A connector according to claim 12 wherein one of side walls includes means for keying and polarizing a sub-strate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US90913478A | 1978-05-24 | 1978-05-24 | |
| US909,134 | 1978-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1099352A true CA1099352A (en) | 1981-04-14 |
Family
ID=25426678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA319,193A Expired CA1099352A (en) | 1978-05-24 | 1979-01-05 | Electrical connector for circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1099352A (en) |
-
1979
- 1979-01-05 CA CA319,193A patent/CA1099352A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |