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Expired Canadian patentCanada

Nut lock

CA 55463 A · Owner: Charest, George · Inventors: Charest, George

CIPO record

Overview

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

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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.

Google PatentsCIPO record

Why it's free to use

  • Granted March 29, 1897. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 29, 1914.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 9, 1897
GrantedMarch 29, 1897
Term endedMarch 29, 1914
Patent numberCA 55463 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

189819001902190419061908191019121914Application filedFeb 9, 1897Patent grantedMarch 29, 1897Term endedMarch 29, 1914

Sources & verification

Official CIPO records

Canadian Patents DatabaseClaims, description, documents and status.CIPO

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Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.com

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