Radio telephone apparatus
CA 1315343 C · Owner: Aisaka, Hideki · Inventors: Aisaka, Hideki; Sawa, Buntarou
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable telephone apparatus which is capable of being selectively connected to an adaptor unit for transmitting a radio frequency (RF) signal at a certain power level in response to a level control signal. The telephone apparatus includes an amplifier for amplifying the RF signal by a predetermined amplification factor and an antenna for radiating the amplified RF signal. An operator actuatable switch is coupled to the output of the amplifier and is selectively coupled to the antenna and the adaptor unit. A control device is coupled to the amplifier and the operator actuatable switch and is responsive to the level control signal for controlling the amplifier so that the amplification …
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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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.