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Expired Canadian patentCanada

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CA 69237 A · Owner: Mcdowell, Thomas · Inventors: Mcdowell, Thomas

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 November 6, 1900. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 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.
FiledMarch 7, 1899
GrantedNovember 6, 1900
Term endedNovember 6, 1917
Patent numberCA 69237 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190019021904190619081910191219141916Application filedMarch 7, 1899Patent grantedNov 6, 1900Term endedNov 6, 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.