Article for increasing the life expectancy of filament light bulbs
CA 1065008 A · Owner: Beining, August H. · Inventors: Beining, August H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an article for increasing the life expectancy of filament light bulbs. It has been known to rewire electrical circuits feeding light bulbs to include conventional power decreasing and/or transient limiting devices therein. However because, of the inconvenience of this approach it has been used to an insignifi-, cant extent. Heretofore there has been no simple and efficient way to insert convention power decreasing and/or transient limiting devices such as a diode in a home light bulb circuit. The present invention overcomes these problems. According to the present invention there is provided an, article positionable in a conventional light bulb socket which …
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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 October 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 23, 1996.
- 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.