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Expired Canadian patentCanada

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CA 128159 A · Owner: Mccauley, William Terrence · Inventors: Mccauley, William Terrence; Mccauley, Edward

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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 September 20, 1910. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 20, 1927.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 17, 1910
GrantedSeptember 20, 1910
Term endedSeptember 20, 1927
Patent numberCA 128159 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

191119131915191719191921192319251927Application filedMarch 17, 1910Patent grantedSep 20, 1910Term endedSep 20, 1927

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.