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Expired Canadian patentCanada

Radio telephone apparatus

CA 1293071 C · Owner: Kabushiki Kaisha Toshiba · Inventors: Sawa, Buntaro; Koike, Noboru

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 including a portable radio device capable of being mounted on and carried out from a vehicle such as an automobile in use. The portable radio device has a transmission-reception antenna accomodatable therein and is connected via a removable coaxial cable with an additional unit mounted on the vehicle. When the radio device is connected to the additional unit via the coaxial cable, a transmissionreception antenna fixed to the vehicle is connected to the radio unit of the portable radio device via the coaxial cable whereas when the portable radio device is removed from the additional unit, the accommodatable transmissionreception antenna is connected to the radio …

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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 December 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 27, 1988
GrantedDecember 10, 1991
Term endedDecember 10, 2008
Patent numberCA 1293071 C
Classification (IPC)H04B1/38 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedSep 27, 1988Patent grantedDec 10, 1991Term endedDec 10, 2008

Sources & verification

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