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Expired Canadian patentCanada

Apparatus for manufacturing iron and its alloys

CA 75975 A · Owner: Crean, Francis Charles · Inventors: Crean, Francis Charles

CIPO record

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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 May 20, 1902. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 1919.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 23, 1902
GrantedMay 20, 1902
Term endedMay 20, 1919
Patent numberCA 75975 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190319051907190919111913191519171919Application filedApril 23, 1902Patent grantedMay 20, 1902Term endedMay 20, 1919

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.