Circuit for passing together sets of sequences of digits to form telephonic identification codes and method therefor
CA 2134976 A1 · Owner: Akin, Steven Christopher · Inventors: Main, Douglas Walter; Akin, Steven Christopher
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit and associated method for a radiotelephone which parses together sets of sequences of digits to form a telephonic identification code. Telephonic identification codes are stored in memory elements (506) and the present location of the telephonic apparatus is also stored in a memory element. A user of the radiotelephone desiring to effectuate a communication link with other telephonic apparatus inputs to the circuit portions of a telephonic identification code associated with the other telephonic apparatus. The circuit compares (518) the portion input by the user with stored telephonic identification codes. A stored telephonic identification code having similar digits is identified …
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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 February 28, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2016.
- 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
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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.