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Expired Canadian patentCanada

Paper gauge

CA 97093 A · Owner: Smith, William · Inventors: Smith, William

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.

Why it's free to use

  • Granted January 23, 1906. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 1923.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 21, 1905
GrantedJanuary 23, 1906
Term endedJanuary 23, 1923
Patent numberCA 97093 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190619081910191219141916191819201922Application filedAug 21, 1905Patent grantedJan 23, 1906Term endedJan 23, 1923

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.