System for the extended provision of cellular mobile radiotelephone service
CA 1322397 C · Owner: Horton, Harold E. · Inventors: Crouse, Randall L.; Saroka, Harold Grant; Lyle, Elmer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A technique for enabling a peregrinating Cellular Mobile Radiotelephone (CMR) subscriber to automatically receive in a, foreign service area (that is, an area outside his home service area), calls placed to his MID at his home service area. An FMR processor is coupled through a cable or LAN to a switch associated with the foreign MTSO and is coupled preferably through a private data network to a switch, associated with the subscriber's home MTSO. Within the FMR processor resides a program that detects the reception at the foreign switch of a predetermined code indicating that calls placed to the roamer's home MID are to be forwarded to the foreign MTSO. Subsequent to the "validation" of 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
- Granted September 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 21, 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.