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Expired Canadian patentCanada

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CA 68263 A · Owner: Donaldson, George Mackey · Inventors: Donaldson, George Mackey

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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.

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Why it's free to use

  • Granted July 30, 1900. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 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.
FiledJuly 11, 1900
GrantedJuly 30, 1900
Term endedJuly 30, 1917
Patent numberCA 68263 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190119031905190719091911191319151917Application filedJuly 11, 1900Patent grantedJuly 30, 1900Term endedJuly 30, 1917

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.