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Expired Canadian patentCanada

Commercial message timer

CA 1305785 C · Owner: Johnson, Gene Harlow · Inventors: Johnson, Gene Harlow

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

RCA 85,079, ABSTRACT, A commercial message timer when enabled by a, user, stores data indicative of a first tuned station and begins timing a predetermined time period. Upon expiration of the time period, the first tuned station is automatically reselected if it had been deselected after the timer was enabled. In this way a user can avoid a commercial message on a first channel by setting the timer and scanning through other channels, and yet have the receiver return automatically to the first channel at the end of a time period substantially equal to that of a typical commercial message. In another embodiment employing PIX-IN-PIX circuity, the subject apparatus is responsive to the …

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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 July 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 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.
FiledSeptember 28, 1989
GrantedJuly 28, 1992
Term endedJuly 28, 2009
Patent numberCA 1305785 C
Classification (IPC)H04N5/44 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedSep 28, 1989Patent grantedJuly 28, 1992Term endedJuly 28, 2009

Sources & verification

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