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Expired Canadian patentCanada

System and method for retrieving messages from a voice message system

CA 2221660 C · Owner: New Cingular Wireless Services, Inc. · Inventors: Buhrmann, Michael

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A communication device and method in which actuation of a function key, corresponding to at least one function associated with a remotely located voice messaging system causes a command, related to the actuated function key to be generated and sent to the voice messaging system. The predetermined function keys correspond to voice messaging system functions such as listen to, a message, skip a message replay a message, delete a message, play a previous message and fast forward through a message.

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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 November 20, 1997 and granted February 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 20, 1997
GrantedFebruary 13, 2001
Term endedNovember 20, 2017
Patent numberCA 2221660 C
Classification (IPC)H04M3/42 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedNov 20, 1997Patent grantedFeb 13, 2001Term endedNov 20, 2017

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.