Method for providing an open interface to automatic recall service
CA 2242153 C · Owner: Bellsouth Intellectual Property Group, Inc. · Inventors: Malik, Dale W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for providing an open interface or access to, information that is stored in a called party switch in relation to an automatic recall telecommunications service. Automatic recall service allows a customer to dial a special feature code and receive an enunciation of the directory number of the last incoming caller. Typically automatic recall-related information is stored in the called party switch and is not accessible to external network elements that may provide enhanced services with this information. This automatic recall-related information may include information such as the directory number of the last incoming caller, the time stamp of the last incoming call, and/or 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
- Filed June 30, 1998 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 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.