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Expired Canadian patentCanada

Clock pulse generator for microcomputer

CA 1288828 C · Owner: Sony Corporation · Inventors: Watanabe, Nobuhisa

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

The output of a single source of pulses is sequentially frequency divided and gate circuits arranged so that one of the plurality of divisions can be selectively supplied to an output terminal of the device.

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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 September 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 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.
FiledMay 12, 1988
GrantedSeptember 10, 1991
Term endedSeptember 10, 2008
Patent numberCA 1288828 C
Classification (IPC)H03K5/15 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMay 12, 1988Patent grantedSep 10, 1991Term endedSep 10, 2008

Sources & verification

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