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Expired Canadian patentCanada

Signal processing circuit

CA 2127520 C · Owner: Reesor, Gordon J. · Inventors: Reesor, Gordon J.

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 circuit for applying a predetermined algorithm to an input signal, comprises an input for receiving the input signal, a signal processing device for processing the input signal in accordance with the predetermined algorithm and a, device for outputting the processed signal the signal, processing device comprising distributed bit-serial logic circuits to implement the predetermined algorithm.

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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

  • Filed July 6, 1994 and granted January 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 6, 1994
GrantedJanuary 16, 2001
Term endedJuly 6, 2014
Patent numberCA 2127520 C
Classification (IPC)G06F3/16 +1 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJuly 6, 1994Patent grantedJan 16, 2001Term endedJuly 6, 2014

Sources & verification

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