Paging system for establishing connections using stored wide-area telephone numbers
CA 2109268 A1 · Owner: Kakihara, Masashi · Inventors: Kakihara, Masashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Paging System for Establishing Connections Using Stored Wide-Area Telephone Numbers", ABSTRACT OF THE DISCLOSURE In a wide-area paging system, each of paging terminals connected to a switched communication network covers a home service area and provides a conversion an incoming calling signal received from the network to a paging signal unique to the home service area and transmits the paging signal to radio transmitters located in the home service area. One of the paging terminals includes a memory for snoring telephone numbers of pagers registered to wide-area paging service and, determines whether a destination pager paged by the transmitted paging signal is registered to the wide-area …
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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 October 26, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2015.
- 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.