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Expired Canadian patentCanada

Letter file

CA 66646 A · Owner: Wiley, Clarence Henry · Inventors: Wiley, Clarence Henry

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 17, 1900. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 1917.
  • 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 2, 1900
GrantedMarch 17, 1900
Term endedMarch 17, 1917
Patent numberCA 66646 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190119031905190719091911191319151917Application filedFeb 2, 1900Patent grantedMarch 17, 1900Term endedMarch 17, 1917

Sources & verification

Official CIPO records

Canadian Patents DatabaseClaims, description, documents and status.CIPO

Cross-check elsewhere

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.