Radio receiver with plural converters and frequency control
CA 1069181 A · Owner: Sony Corporation · Inventors: Sato, Tsutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radio receiver including first and second frequency converters to produce first and second intermediate frequency signals a local oscillator, generating a first local signal to be supplied to the second frequency converter a variable frequency oscillator, and a circuit arrangement to produce a second local signal to be supplied to the first frequency converter based upon the first local signal and an output signal of the variable frequency oscillator. The radio receiver also includes a display means to display a received broadcasting wave.
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 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
- 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.