Apparatus and method for routing communications
CA 2297434 A1 · Owner: Pathfinder Technical Resources Limited · Inventors: Hilsenrath, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Telephone calls are routed by means of a routing device (3) which prefixes user generated call numbers with a prefix code which determines a network connection route and provides billing and customer identification information. The device determines the preferred route by addressing a look up table (134 135) which is periodically updated with updating information transmitted via radio broadcast from a control centre (7). The device may be a stand alone device (100) connected intermediate a telephone and a local exchange connection or may be formed unitarily with a telephone (101) fascimile , machine (102) or mobile telephone (120). The broadcast updating information is transmitted by …
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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 July 17, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 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.