Listening control apparatus in a receiver
CA 1054229 A · Owner: Thomson-Csf · Inventors: Narbaits-Jaureguy, Jean-Raymond; Billottet, Henri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A listening control apparatus is included in a receiver for enabling at will the interruption and the re-establishment of the reproduction of transmitted signals which take priority on a switchable broadcasting device. The listening control apparatus comprises, in the transmission channel a switch which is control-, led by a control device which is sensitive to a change of electrical state, which latter is brought about by a manual control. The interruption in the transmission channel which prevents the, signals from being transmitted causes an illuminated device to, be actuated which indicates both the existence of such signals and the fact that they are …
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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 May 8, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 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.