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Expired Canadian patentCanada

Tie

CA 98538 A · Owner: Couch, Charles Albert · Inventors: Couch, Charles Albert

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 April 17, 1906. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 1923.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 26, 1906
GrantedApril 17, 1906
Term endedApril 17, 1923
Patent numberCA 98538 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190719091911191319151917191919211923Application filedMarch 26, 1906Patent grantedApril 17, 1906Term endedApril 17, 1923

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.