Selective call receiver and method of processing diversity messages
CA 2285220 A1 · Owner: Motorola, Inc. · Inventors: Elkin, Kenneth Charles; Kreitzer, Stuart S.; Sanchez, Jose E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a communication system that transmits diversity messages (an original message followed by one or more copies thereof) a selective call receiver , (10) which receives an original message and one or more copies will display only one of the received messages and discard the others without displaying them. This is accomplished by storing in a memory (30) the identification tag of the message that was displayed and deleted. The identical identification tags carried by later copies of the same message are compared to the stored identification tag. If a match is found this indicates that an earlier , version of the received message has already been displayed and deleted whereupon the …
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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 March 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2020.
- 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.