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Expired Canadian patentCanada

Vehicle mounted doppler radar system

CA 1214243 A · Owner: Plessey Overseas Limited · Inventors: Ball, Alan K.

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

Doppler radar system for mounting on a vehicle to sense the speed of movement of the vehicle and to provide an output proportional to the speed of the vehicle which is substantially free from errors due to the vibration and of the vehicle. A Janus configuration is also provided which also eliminates errors due to the angle of tilt of tile vehicle.

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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 November 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 2003.
  • 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 24, 1983
GrantedNovember 18, 1986
Term endedNovember 18, 2003
Patent numberCA 1214243 A
Classification (IPC)G01S13/60 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 24, 1983Patent grantedNov 18, 1986Term endedNov 18, 2003

Sources & verification

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