Interaction of routing features in a telephone system
CA 2182316 C · Owner: Zave, Pamela · Inventors: Zave, Pamela
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Techniques for analyzing interactions of call routing features in a telephone system and implementing the features. Analysis and implementations are based on the recognition that a customer intends a call routing feature to apply to a telephone number which represents either a subscriber to which a call should be routed or a telephone number to which a call should be routed. From this recognition flow two classes of routing features: telephone features which apply to telephone numbers, representing telephones and subscriber features, which apply to telephone numbers representing subscribers. How a given feature interacts with other routing features depends upon which of of the two classes …
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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 30, 1996 and granted December 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2018.
- 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.