Lamp with an integral switch
CA 1320521 C · Owner: Shinzawa, Kouichi · Inventors: Shinzawa, Kouichi; Takano, Tsunesuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lamp with an integral switch comprises a push switch knob assembly including a knob mounted in a tubular member and urged by a spring. The lamp can be mounted such that the switch knob is maintained in its retracted position by something such as a closed trunk hood of an automobile thereby breaking the circuit between a power source and a Bulb of the lamp, and is allowed to be moved to its extended position under the action of the spring making the circuit between the power source and the bulb. It can be conveniently used for automatically illuminating a trunk room of an automobile, for example, when its trunk hood is opened.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 20, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.