Channel selecting apparatus
CA 1094704 A · Owner: Sony Corporation · Inventors: Saito, Takahiko; Sato, Masaru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Channel selecting apparatus for use with first and second electrically tunable tuning devices. A selectively operable channel selector, common to the first and second tuning devices, generates and supplies channel selector signals to the first and second tuning devices to determine the tuning condition of both devices. A control circuit selectively produces a lock-out control signal; and a locking circuit is coupled to the second tuning device and is responsive to the absence of the lock-out control signal to enable the tuning condition of the second tuning device to be determined by the channel selector signals at the same time that the tuning condition of the first tuning device is …
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 January 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 27, 1998.
- 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.