Address code modification in a transmitter receiver pair
CA 2005032 A1 · Owner: Reich, Richard M. · Inventors: Reich, Richard M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for modifying an address code in a receiver to match an address code of an associated transmitter is disclosed. Upon activation the receiver is, placed in a modification mode. The transmitter is then activated to transmit an address code to the receiver. The receiver, while in the modification mode receives the, transmitted address code and stores data corresponding to the transmitted code in memory. The receiver unit then exits the modification mode. Thereafter, upon activation of the transmitter unit, and upon reception of an address code matching that stored in the receiver memory the receiver generates a control signal to initiate a desired control function.
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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
- Filed December 8, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 8, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 8, 2011.
- 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.