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Expired Canadian patentCanada

Method and apparatus for visual indication of stored voice signals

CA 1303263 C · Owner: Saltzman, Jeremy · Inventors: Saltzman, Jeremy; Chamberlin, David B.; Jachmann, Emil F.

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Abstract From the Canadian patent

A system for storage and forwarding of voice signals. The system includes apparatus for storage and retrieval of voice signals and telephone-like station sets for access to the stored signals. The station sets also include a display and the system transmits text messages corresponding to various stored signals to the station sets corresponding to the addressees of the various stored signals to inform the addressees that they have messages waiting. In one embodiment the text messages identify the originator or class of the voice signals. In another embodiment the station set will respond to an input by a user to automatically contact the apparatus for storage and retrieval of voice signals …

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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

  • Granted June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 2, 1988
GrantedJune 9, 1992
Term endedJune 9, 2009
Patent numberCA 1303263 C
Classification (IPC)H04M11/00 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedDec 2, 1988Patent grantedJune 9, 1992Term endedJune 9, 2009

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