Power amplifier
CA 1088162 A · Owner: Sony Corporation · Inventors: Iga, Akira; Doi, Toshitada
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power amplifier having an input terminal supplied with a PCM (Pulse Code modulated) signal, power supplys each producing a voltage weighted correspondingly to each order of bits of the PCM-code switching means controlled by the PCM input signal so as to connect the power supplies selectively to a load in series in response to the PCM code.
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 October 21, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 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.