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Expired Canadian patentCanada

Power supply having on-off control

CA 1279097 C · Owner: Rca Licensing Corporation · Inventors: Lee, Mu Sen

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A video display apparatus incorporates a start-up and control circuit that is responsive to a bilevel signal indicative of the desired operating state of the video display apparatus. One state of the bilevel signal is effective to permit operation of the horizontal deflection circuitry and to generate a gating pulse for a voltage regulator circuit. The other state of the bilevel signal disables the horizontal deflection circuit which in turn disables the video display apparatus load circuits.

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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 January 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 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.
FiledMay 8, 1987
GrantedJanuary 15, 1991
Term endedJanuary 15, 2008
Patent numberCA 1279097 C
Classification (IPC)H04N5/63 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMay 8, 1987Patent grantedJan 15, 1991Term endedJan 15, 2008

Sources & verification

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