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Expired Canadian patentCanada

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CA 95446 A · Owner: Gray, Bertram Parrott · Inventors: Gray, Bertram Parrott

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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 October 10, 1905. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 10, 1922.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 7, 1905
GrantedOctober 10, 1905
Term endedOctober 10, 1922
Patent numberCA 95446 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190619081910191219141916191819201922Application filedSep 7, 1905Patent grantedOct 10, 1905Term endedOct 10, 1922

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.