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Expired Canadian patentCanada

Radio telephone apparatus with voice actuated dialing

CA 1298877 C · Owner: Marui, Kuniyoshi · Inventors: Marui, Kuniyoshi

CIPO record

Overview

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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 radio telephone apparatus comprises a first converting means for converting human utterances into acoustic signals, second converting means for converting the acoustic signals into digital signals representing the human utterances, means for storing a plurality of different address data corresponding to a plurality of data of telephone numbers, means for comparing the digital signals with the address data, first selecting means for selecting address data of identical contents with the digital signals as a result of the comparison by said means for comparing second selecting means for selecting a channel for broadcast of an origination signal and means for broadcasting the origination …

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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 April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 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.
FiledMay 27, 1988
GrantedApril 14, 1992
Term endedApril 14, 2009
Patent numberCA 1298877 C
Classification (IPC)H04M1/27 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMay 27, 1988Patent grantedApril 14, 1992Term endedApril 14, 2009

Sources & verification

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