On-off system for television receivers
CA 1048639 A · Owner: Rca Corporation · Inventors: Evans, Wayne W.; Christensen, Don E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A television receiver having push buttons numerically labelled 0 through 9 for operatively selecting a television channel is switched on or off without the aid of a particularized manual on-off switch. Depression of channel selection push buttons activates the power to the main portion of the television receiver concurrently setting it to a desired television channel. Further depression of the push buttons selecting a particular number which does not correspond to any existent channel operatively switches the main portion of the television receiver off.
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 February 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 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.