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Expired Canadian patentCanada

Digital engine analyzer

CA 1304161 C · Owner: Govekar, Craig F. · Inventors: Govekar, Craig F.

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

A digital engine analyzer receives analog input signals from an engine being analyzed and converts the analog signals into digital data signals for use in generating a display on a CRT screen of alphanumeric characters representing numerical values of the analog input signals and into waveform data signals for use in producing a display on the CRT screen of primary and secondary waveform patterns, the analyzer including a row counter which registers a count indicative of the row in which the electronic beam is sweeping at an instant of time and a comparator circuit which compares the state of the row counter with a reference signal and enables only the digital data signals to be applied to …

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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 June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 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.
FiledAugust 22, 1986
GrantedJune 23, 1992
Term endedJune 23, 2009
Patent numberCA 1304161 C
Classification (IPC)G09G1/16 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 22, 1986Patent grantedJune 23, 1992Term endedJune 23, 2009

Sources & verification

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