CA1226023A - Lamp with two bulb sockets and selecting switch - Google Patents
Lamp with two bulb sockets and selecting switchInfo
- Publication number
- CA1226023A CA1226023A CA000426277A CA426277A CA1226023A CA 1226023 A CA1226023 A CA 1226023A CA 000426277 A CA000426277 A CA 000426277A CA 426277 A CA426277 A CA 426277A CA 1226023 A CA1226023 A CA 1226023A
- Authority
- CA
- Canada
- Prior art keywords
- insertion opening
- recess
- contact
- side contact
- engaging means
- 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
- Connecting Device With Holders (AREA)
Abstract
--Abstract of the Disclosure A two bulb lamp socket is provided with a housing which defines a first recess and first and second insertion openings below the recess. An inversion mechanism for switching bulbs on and off is located in the recess. Each insertion opening is provided with a contact in the upper central portion of the open-ing, and with a side contact on the sides of the openings, Each opening is provided with an insulated engaging means for mechani-cally engaging a bulb which is screwed into the opening.
Description
1:2260Z3 Jo TWO BULB LAMP SOCKET
BACKGROUND Ox TOE INVASION
1. Piled of the Invention The present invention is directed to a lamp socket for two bulbs, such as a regular bulb and a miniature bulb. One inversion mechanism is used to control the lighting of both bulbs.
BACKGROUND Ox TOE INVASION
1. Piled of the Invention The present invention is directed to a lamp socket for two bulbs, such as a regular bulb and a miniature bulb. One inversion mechanism is used to control the lighting of both bulbs.
2. Description of the Prior Art In the past, this type of lamp socket has included metal sockets provided with screw threads. The bulbs are screwed into these sockets, which mechanically hold both bulbs and pro-vise electrical contact, since the sockets are made of metal.
Such sockets have had disadvantages since a consumer inserting a bulb into the socket could suffer an electrical shock upon axe-dental contact wit to the base of the bulb. Furthermore connect lion between the base of each bulb and a terminal strip and con-section between the terminal strips have been difficult to carry out because of the use of pipe eyelet for both electrical 20n-section and mechanical engaging of the bulb.
SUMMARY OF THE Invention ., It is an object of this invention to provide a lamp socket for two bulbs which uses one part for mechanically engage in and another for electrically contacting a bulb held in the socket.
.,... _.
It is a further object of this invention to provide a lamp socket which reduces the likelihood of electric shock to a consumer inserting bulb into the socket.
It is a still further object of this invention to pro-vise a lamp socket which is easy to assemble and which does not use a pipe eyelet.
It is a still further object of this invention to pro-vise a lamp socket which does not have excessive heating at the electrical connection points.
The above objects and others are obtained by providing a lamp socket including a housing which defines a first recess, a first lamp insertion opening between the recess and a second lamp insertion opening below the recess and adjacent the first open-in. Contacts are located in the upper venter portions of each of the insertion openings. Contacts are also located at the sides of the insertion openings. Each insertion opening is pro-voided with an engaging member for supporting a bulb in the inter lion opening which is insulated from the power source.
BRIEF DESCRIPTION Ox THE DRAWINGS
The present invention can be further understood by reading the following description in conjunction with the draw-ins, in which:
Figure 1 is a longitudinal sectional view of one embody immunity of the present invention;
Figure 2 is a bottom view of the embodiment of Figure l;
inure 3 is a plan view of the embodiment ox Figure 1 with the cover removed; and Figure 4 is a perspective view of a side contact used in the embodiment of Figure 1.
DETAILED DESCRIPTION Ox THE INVENTION
__ _ Referring to the drawings, socket housing 1 defines a recess I Rotary plate 2, which is rotatable for turning bulbs (not shown) on and off, and inversion mechanism 5 are located within the recess I. The inversion mechanism includes a coil spring 3 which downwardly biases the rotary plate 2 and provides a restoring force to the plate 2 and a center shaft I. The rotary plate bears against a conductive body 2c, which is no-taxable with the rotary plate I The conductive body 2c is pro-voided with legs pa and 2b, which are symmetric with respect to the axis of center shaft 4.
Insertion openings 7 and 8 are provided in the lower portion lo ox the housing. It is preferred that the opening 8 accept a miniature bulb, while opening 7 accepts a standard bulb.
These openings communicate with each other. Both openings are located beneath the recess I. Recess 6 communicates with insert lion opening 8 through bore 9. At the bottom pa of the recess there is formed a bearing Gore 10 for the center shalt 4. A step portion 11 is provided around the bearing bore. The step portion 11 is divided into six parts.
support terminal strip 12 is fixed to the upper part of the housing 1 through a screw 13 jig. I and terminal screw 14 is provided, thus pivotal supporting the center shalt 4 in the
Such sockets have had disadvantages since a consumer inserting a bulb into the socket could suffer an electrical shock upon axe-dental contact wit to the base of the bulb. Furthermore connect lion between the base of each bulb and a terminal strip and con-section between the terminal strips have been difficult to carry out because of the use of pipe eyelet for both electrical 20n-section and mechanical engaging of the bulb.
SUMMARY OF THE Invention ., It is an object of this invention to provide a lamp socket for two bulbs which uses one part for mechanically engage in and another for electrically contacting a bulb held in the socket.
.,... _.
It is a further object of this invention to provide a lamp socket which reduces the likelihood of electric shock to a consumer inserting bulb into the socket.
It is a still further object of this invention to pro-vise a lamp socket which is easy to assemble and which does not use a pipe eyelet.
It is a still further object of this invention to pro-vise a lamp socket which does not have excessive heating at the electrical connection points.
The above objects and others are obtained by providing a lamp socket including a housing which defines a first recess, a first lamp insertion opening between the recess and a second lamp insertion opening below the recess and adjacent the first open-in. Contacts are located in the upper venter portions of each of the insertion openings. Contacts are also located at the sides of the insertion openings. Each insertion opening is pro-voided with an engaging member for supporting a bulb in the inter lion opening which is insulated from the power source.
BRIEF DESCRIPTION Ox THE DRAWINGS
The present invention can be further understood by reading the following description in conjunction with the draw-ins, in which:
Figure 1 is a longitudinal sectional view of one embody immunity of the present invention;
Figure 2 is a bottom view of the embodiment of Figure l;
inure 3 is a plan view of the embodiment ox Figure 1 with the cover removed; and Figure 4 is a perspective view of a side contact used in the embodiment of Figure 1.
DETAILED DESCRIPTION Ox THE INVENTION
__ _ Referring to the drawings, socket housing 1 defines a recess I Rotary plate 2, which is rotatable for turning bulbs (not shown) on and off, and inversion mechanism 5 are located within the recess I. The inversion mechanism includes a coil spring 3 which downwardly biases the rotary plate 2 and provides a restoring force to the plate 2 and a center shaft I. The rotary plate bears against a conductive body 2c, which is no-taxable with the rotary plate I The conductive body 2c is pro-voided with legs pa and 2b, which are symmetric with respect to the axis of center shaft 4.
Insertion openings 7 and 8 are provided in the lower portion lo ox the housing. It is preferred that the opening 8 accept a miniature bulb, while opening 7 accepts a standard bulb.
These openings communicate with each other. Both openings are located beneath the recess I. Recess 6 communicates with insert lion opening 8 through bore 9. At the bottom pa of the recess there is formed a bearing Gore 10 for the center shalt 4. A step portion 11 is provided around the bearing bore. The step portion 11 is divided into six parts.
support terminal strip 12 is fixed to the upper part of the housing 1 through a screw 13 jig. I and terminal screw 14 is provided, thus pivotal supporting the center shalt 4 in the
- 3 -11ZZ6~)~3 _ . .
bearing bore 10. Stopper 15 is formed by downwardly bending portion ox the support terminal strip 12~ with spring 3 having its end pa bent downwardly to contact the stopper 15 and bias it.
The insertion opening 8 is provided with a center con-tact 16, whose end aye is provided at substantially the upper center section of the insertion space 8. End 16b of the contact extends through bore 9, is placed on one part ox the step portion 11 an is fixed to housing 1 through use of screw 17. Insertion opening 7 is provided with center contact 18 provided at sub-staunchly the upper center portion of the insertion space 7.
The other end 18b is placed on the step portion 11, not adjacent to end 16b, and is fixed to housing 1 by means of screw 20.
Side contact member 21 includes a side cantata 22 which enters into insertion space 7 and a side contact 23 which enters into insertion space 8. As seen in figure 4, side contact a can be fixed to a terminal strip 26 which is provided with terminal screw 24 (jig. 3) and fixed to housing 1 through screw 25. wide contact 22 thus extends into the insertion space 7. As can be seen in Figure 4, side contact 22 may be provided with a recta-gulflr opening 28.
Side contact 23 extends from opening 8, through opening 7, and is provided with a bent portion 29 which extends through the bore 27 between recess 6 and the lamp insertion opening 7.
Tongue 29 cooperates with rectangular opening 28 of side contact 22. A paw 30 is provided to contact the edge ox bore 27 to ensure contact with side contact 22. Thus, side contact 23 is electrically connected with side contact 22 without the require-mint of a pipe eyelet Side contacts 22 and 23 are each fixed to the housing 1.
Z;~60Z3 Insertion opening 7 is provided with a metal fitting 31, which my be a substantially C-shaped slit ring made of piano wire for example. The ends of the ring may by offset a distance approximately equal to the pitch of the thread of a bulb base.
This facilitates screwing of a bulb into the socket. The "pitch"
of the thread refers to the distance between adjacent crests of the thread. The fitting 31 is mounted in recesses 33 provided in projections 32. These projections 32 are preferably provided at 120 intervals around the insertion opening 7. The recesses 33 can be formed during molting of the projections 32, or they can be cut after molding. As con be seen in Figure 2, positioning projection 34 corresponds to the slit ends aye of the metal fitting 31. Furthermore, the height of projections aye may be changed to further secure the electric bulb and prevent tilting of the bulb. Also, fitting 31 may be formed by a contraction process so as to be insertable mounted in opening 7.
Insertion opening 8 is provided with a plate member 35. Like the fitting 31, plate 35 may be wormed to be sub Stan-tidally C-shaped, with the ends of the plate being offset by a distance equal to the pitch of the thread of a bulb to facilitate screwing of the bulb into the insertion opening 8. Retaining portions 36, 3'.' and 38 can be wormed in the housing 1. Lid body 39 provides an insertion bore 40 for a bulb, and forms biassing portions 41, 42 and 43 which correspond to the retaining portions 36-380 The lid body 39 is fitted into the insertion opening 8 and can be fixed by use of screw 44.
I ~Z6023 witting 31 and plate 35 are not involved with supplying current to the bulbs- Thus, the fitting and plate are insulated from current during insertion ox a bulb Of course some current may be carried by the fitting and plate after a bulb touches contact 16 or 18, but the bulb is far enough inside the socket at this point to reduce the danger of a consumer accidentally touch-in the fitting or plate and experiencing a shock. The bulb will not carry current until it reaches the contacts, which are rota-lively deep within the housing. Thus, danger of shock from axe-dentally touching the bulb base is reduced, since the bulb curries no current until it is difficult to touch the bulb base.
The fitting and plate can be considered as substantially ins-fated from the power source , The socket Jan be provided with a cover 45, which when used for a desk lamp, includes insert molded fitting 46 which can cooperate with a conduit hot Sheehan The cover is fitted onto bore lb of the housing 1 and is secured via an insertion bore 47 which accepts assembling-screw 48.
An electric bulb is screwed into insertion opening 31 and is mechanically held by metal fitting 31. The bulb electric gaily contacts with center contact 18 and side contact 22. A
second bulb, preferably a miniature bulb is screwed into inter lion opening 8 and is mechanically held by plate 35. This bulb electrically contacts center contact 16 and side contact 23.
cord 49 is pulled to rotate the rotary plate 2, thus switching the bulbs on or off. Also, as can be seen in Figure 1, the rotary plate may be designed so that the plate 2 may contact only ~L~26~ 3 end 16b at one position, which allows the miniature lamp to remain on.
As can be seen prom the above, the two bulb lamp socket of this invention includes a housing 1 which is provided with a recess 6 in which inverting mechanism 5 is located, and which is provided at its lower surface lo with electric lam insertion openings 7 and 8. The openings 7 and 8 communicate with each other. Center contacts 16 and 18 are provided at substantially the upper central portion of each ox the openings 7 and 8. Each opening is also provided with side contacts 22 and 23. Metal fitting 31 and plate 35 are provided to mechanically hold bulbs within the insertion openings. Lid body 39 provided with insert lion bore 40 may be fitted into the opening of insertion space 8 for mounting the plate member 35. witting 31 and plate member 35 do not have any electric current. Thus, electric shock can be avoided, even when a consumer accidentally touches thy witting 31 or plate member I Since the insertion opening 7 and insertion opening 8 are in communication with each other, side contact 23 can be inserted prom the lower surface lo of the housing I thus allowing easy assembly without the use ox a pipe eyelet and pro-venting excessive heating at electrical convection points.
bearing bore 10. Stopper 15 is formed by downwardly bending portion ox the support terminal strip 12~ with spring 3 having its end pa bent downwardly to contact the stopper 15 and bias it.
The insertion opening 8 is provided with a center con-tact 16, whose end aye is provided at substantially the upper center section of the insertion space 8. End 16b of the contact extends through bore 9, is placed on one part ox the step portion 11 an is fixed to housing 1 through use of screw 17. Insertion opening 7 is provided with center contact 18 provided at sub-staunchly the upper center portion of the insertion space 7.
The other end 18b is placed on the step portion 11, not adjacent to end 16b, and is fixed to housing 1 by means of screw 20.
Side contact member 21 includes a side cantata 22 which enters into insertion space 7 and a side contact 23 which enters into insertion space 8. As seen in figure 4, side contact a can be fixed to a terminal strip 26 which is provided with terminal screw 24 (jig. 3) and fixed to housing 1 through screw 25. wide contact 22 thus extends into the insertion space 7. As can be seen in Figure 4, side contact 22 may be provided with a recta-gulflr opening 28.
Side contact 23 extends from opening 8, through opening 7, and is provided with a bent portion 29 which extends through the bore 27 between recess 6 and the lamp insertion opening 7.
Tongue 29 cooperates with rectangular opening 28 of side contact 22. A paw 30 is provided to contact the edge ox bore 27 to ensure contact with side contact 22. Thus, side contact 23 is electrically connected with side contact 22 without the require-mint of a pipe eyelet Side contacts 22 and 23 are each fixed to the housing 1.
Z;~60Z3 Insertion opening 7 is provided with a metal fitting 31, which my be a substantially C-shaped slit ring made of piano wire for example. The ends of the ring may by offset a distance approximately equal to the pitch of the thread of a bulb base.
This facilitates screwing of a bulb into the socket. The "pitch"
of the thread refers to the distance between adjacent crests of the thread. The fitting 31 is mounted in recesses 33 provided in projections 32. These projections 32 are preferably provided at 120 intervals around the insertion opening 7. The recesses 33 can be formed during molting of the projections 32, or they can be cut after molding. As con be seen in Figure 2, positioning projection 34 corresponds to the slit ends aye of the metal fitting 31. Furthermore, the height of projections aye may be changed to further secure the electric bulb and prevent tilting of the bulb. Also, fitting 31 may be formed by a contraction process so as to be insertable mounted in opening 7.
Insertion opening 8 is provided with a plate member 35. Like the fitting 31, plate 35 may be wormed to be sub Stan-tidally C-shaped, with the ends of the plate being offset by a distance equal to the pitch of the thread of a bulb to facilitate screwing of the bulb into the insertion opening 8. Retaining portions 36, 3'.' and 38 can be wormed in the housing 1. Lid body 39 provides an insertion bore 40 for a bulb, and forms biassing portions 41, 42 and 43 which correspond to the retaining portions 36-380 The lid body 39 is fitted into the insertion opening 8 and can be fixed by use of screw 44.
I ~Z6023 witting 31 and plate 35 are not involved with supplying current to the bulbs- Thus, the fitting and plate are insulated from current during insertion ox a bulb Of course some current may be carried by the fitting and plate after a bulb touches contact 16 or 18, but the bulb is far enough inside the socket at this point to reduce the danger of a consumer accidentally touch-in the fitting or plate and experiencing a shock. The bulb will not carry current until it reaches the contacts, which are rota-lively deep within the housing. Thus, danger of shock from axe-dentally touching the bulb base is reduced, since the bulb curries no current until it is difficult to touch the bulb base.
The fitting and plate can be considered as substantially ins-fated from the power source , The socket Jan be provided with a cover 45, which when used for a desk lamp, includes insert molded fitting 46 which can cooperate with a conduit hot Sheehan The cover is fitted onto bore lb of the housing 1 and is secured via an insertion bore 47 which accepts assembling-screw 48.
An electric bulb is screwed into insertion opening 31 and is mechanically held by metal fitting 31. The bulb electric gaily contacts with center contact 18 and side contact 22. A
second bulb, preferably a miniature bulb is screwed into inter lion opening 8 and is mechanically held by plate 35. This bulb electrically contacts center contact 16 and side contact 23.
cord 49 is pulled to rotate the rotary plate 2, thus switching the bulbs on or off. Also, as can be seen in Figure 1, the rotary plate may be designed so that the plate 2 may contact only ~L~26~ 3 end 16b at one position, which allows the miniature lamp to remain on.
As can be seen prom the above, the two bulb lamp socket of this invention includes a housing 1 which is provided with a recess 6 in which inverting mechanism 5 is located, and which is provided at its lower surface lo with electric lam insertion openings 7 and 8. The openings 7 and 8 communicate with each other. Center contacts 16 and 18 are provided at substantially the upper central portion of each ox the openings 7 and 8. Each opening is also provided with side contacts 22 and 23. Metal fitting 31 and plate 35 are provided to mechanically hold bulbs within the insertion openings. Lid body 39 provided with insert lion bore 40 may be fitted into the opening of insertion space 8 for mounting the plate member 35. witting 31 and plate member 35 do not have any electric current. Thus, electric shock can be avoided, even when a consumer accidentally touches thy witting 31 or plate member I Since the insertion opening 7 and insertion opening 8 are in communication with each other, side contact 23 can be inserted prom the lower surface lo of the housing I thus allowing easy assembly without the use ox a pipe eyelet and pro-venting excessive heating at electrical convection points.
Claims (10)
1. A lamp socket, comprising:
a housing defining a first recess, a first inser-tion opening below said first recess and a second insertion open-ing below said first recess and adjacent said first insertion opening;
an inversion mechanism in said first recess;
a first contact in an upper center portion of said first insertion opening, electrically connected with said inver-sion mechanism;
a second contact in an upper center portion of said second insertion opening, electrically connected with said inver-sion mechanism;
a first side contact at one side of said first insertion opening;
a second side contact at one side of said second insertion opening;
first engaging means within said first insertion opening for supporting the base of a bulb inserted in said first inserticn opening, substantially insulated from said first contact and said first side contact, said first side contact being between said first contact and said first engaging means;
and second engaging means within said second insertion opening for supporting the base of a bulb inserted in said second insertion opening, substantially insulated grom said second contact and said second side contact, said second side contact being between said second contact and said second engaging means.
a housing defining a first recess, a first inser-tion opening below said first recess and a second insertion open-ing below said first recess and adjacent said first insertion opening;
an inversion mechanism in said first recess;
a first contact in an upper center portion of said first insertion opening, electrically connected with said inver-sion mechanism;
a second contact in an upper center portion of said second insertion opening, electrically connected with said inver-sion mechanism;
a first side contact at one side of said first insertion opening;
a second side contact at one side of said second insertion opening;
first engaging means within said first insertion opening for supporting the base of a bulb inserted in said first inserticn opening, substantially insulated from said first contact and said first side contact, said first side contact being between said first contact and said first engaging means;
and second engaging means within said second insertion opening for supporting the base of a bulb inserted in said second insertion opening, substantially insulated grom said second contact and said second side contact, said second side contact being between said second contact and said second engaging means.
2. A socket as claimed in claim 1, wherein said first engaging means comprises a fitting of substantially C-shaped configuration, the ends of said C-shaped fitting being offset.
3. A socket as claimed in claim 1, wherein said second engaging means comprises a plate of substantially C-shaped con-figuration, the ends of said C-shaped plate being offset.
4. A socket as claimed in claim 3, further comprising a lid body within said second insertion opening which supports said second engaging means, said lid body being provided with an insertion bore.
5. A socket as claimed in claim 1, wherein said first insertion opening communicates with said first recess through a first operative in said housing, said first side contact extend-ing from said first recess through said opening and into said first insertion opening.
6. A socket as claimed in claim 5, wherein said first insertion opening communicates with said second insertion open-ing, and said second side contact extends from said first recess, through said first aperture, into said first insertion opening, and into said second insertion opening.
7. A socket as claimed in claim 6, wherein the portion of said second side contact in said first recess rests on the edge of said aperture and contacts said first side contact.
8. A lamp socket, comprising:
a housing defining a first recess, a first inser-tion opening below said first recess and communicating with said first recess through a first aperture, and a second insertion opening below said first recess, adjacent and communicating with said first insertion opening, and communicating with said first recess through a second aperture;
an inversion mechanism in said first recess;
a first contact in an upper center portion of said first insertion opening, electrically connected with said inver-sion mechanism;
a second contact in an upper center portion of said second insertion opening, electrically connected with said inver-sion mechanism, extending from said first recess, through said second aperture and into said second insertion opening;
a first side contact at one side of said first insertion opening, extending from said first recess, through said first apperture and into said first insertion opening;
a second side contact at one side of said second insertion opening, connectable with said power source, extending from said first recess, through said first aperture, into said first insertion opening and into said second insertion opening, contacting said first side contact in said first recess and rest-ing on the edge of said first aperture;
first engaging means within said first insertion opening for supporting the base of a bulb inserted in said first insertion opening, substantially insulated from said first contact and said first side contact, said first side contact being between said first contact and said first engaging means, said first engaging means comprising a metal fitting of sub-stantially C-shaped configuration, the ends of said C-shaped fitting being offset a distance equal to the pitch of the thread of a bulb inserted in said first insertion opening; and second engaging means within said second insertion opening for supporting the base of a bulb inserted in said second insertion opening, substantially insulated from said second contact and said second side contact, said second side contact being between said second contact and said second engaging means, said second engaging means comprising a plate of substantially C-shaped configuration, the ends of said C-shaped plate being offset a distance equal to the pitch of the thread of a bulb inserted in said second insertion opening; and a lid body fixed to said housing in said second insertion opening, comprising an insertion bore, supporting said second engaging means.
a housing defining a first recess, a first inser-tion opening below said first recess and communicating with said first recess through a first aperture, and a second insertion opening below said first recess, adjacent and communicating with said first insertion opening, and communicating with said first recess through a second aperture;
an inversion mechanism in said first recess;
a first contact in an upper center portion of said first insertion opening, electrically connected with said inver-sion mechanism;
a second contact in an upper center portion of said second insertion opening, electrically connected with said inver-sion mechanism, extending from said first recess, through said second aperture and into said second insertion opening;
a first side contact at one side of said first insertion opening, extending from said first recess, through said first apperture and into said first insertion opening;
a second side contact at one side of said second insertion opening, connectable with said power source, extending from said first recess, through said first aperture, into said first insertion opening and into said second insertion opening, contacting said first side contact in said first recess and rest-ing on the edge of said first aperture;
first engaging means within said first insertion opening for supporting the base of a bulb inserted in said first insertion opening, substantially insulated from said first contact and said first side contact, said first side contact being between said first contact and said first engaging means, said first engaging means comprising a metal fitting of sub-stantially C-shaped configuration, the ends of said C-shaped fitting being offset a distance equal to the pitch of the thread of a bulb inserted in said first insertion opening; and second engaging means within said second insertion opening for supporting the base of a bulb inserted in said second insertion opening, substantially insulated from said second contact and said second side contact, said second side contact being between said second contact and said second engaging means, said second engaging means comprising a plate of substantially C-shaped configuration, the ends of said C-shaped plate being offset a distance equal to the pitch of the thread of a bulb inserted in said second insertion opening; and a lid body fixed to said housing in said second insertion opening, comprising an insertion bore, supporting said second engaging means.
9. A socket as claimed in claim 8, wherein the portion of said first side contact in said recess is provided with a hole, and said second side contact comprises a tongue inserted in said hole.
10. A socket as claimed in claim 8, further comprising a plurality of notched inwardly-extending projections on the periphery of said first insertion opening said first engaging means being held by the notches of said projections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000426277A CA1226023A (en) | 1983-04-20 | 1983-04-20 | Lamp with two bulb sockets and selecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000426277A CA1226023A (en) | 1983-04-20 | 1983-04-20 | Lamp with two bulb sockets and selecting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1226023A true CA1226023A (en) | 1987-08-25 |
Family
ID=4125054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000426277A Expired CA1226023A (en) | 1983-04-20 | 1983-04-20 | Lamp with two bulb sockets and selecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1226023A (en) |
-
1983
- 1983-04-20 CA CA000426277A patent/CA1226023A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |