Battery operated radio receiver
CA 2021459 A1 · Owner: Inter-Link Communications Inc. · Inventors: Macdonald, Michael; Gerke, David B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A special purpose battery-operated radio receiver to operate in conjunction with earphones for limited range reception. The receiver comprises a housing with audio level adjustment and band selection dials mounted on the housing. A tuner mounted within the housing is associated with the band selection dial. The tuner is pre-set to select any one of a predetermined number of radio frequency bands. An open, battery-receiving pocket is provided within a side of the housing, with the pocket having sides circumscribing a base. Battery contact means are electrically associated with the tuner and positioned on a side of the batteryreceiving pocket. An audio contact means for earphones 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
- Filed July 18, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2012.
- 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.