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Expired Canadian patentCanada

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CA 110554 A · Owner: Hambric, Perle T. · Inventors: Hambric, Perle T.; Darrow, Witon E.

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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 March 3, 1908. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 1925.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 10, 1908
GrantedMarch 3, 1908
Term endedMarch 3, 1925
Patent numberCA 110554 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190919111913191519171919192119231925Application filedJan 10, 1908Patent grantedMarch 3, 1908Term endedMarch 3, 1925

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.