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Expired Canadian patentCanada

Hull

CA 128646 A · Owner: Von Keissler, Arthur · Inventors: Von Keissler, Arthur

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.

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Why it's free to use

  • Granted October 11, 1910. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 11, 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.
FiledSeptember 4, 1909
GrantedOctober 11, 1910
Term endedOctober 11, 1927
Patent numberCA 128646 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

191019121914191619181920192219241926Application filedSep 4, 1909Patent grantedOct 11, 1910Term endedOct 11, 1927

Sources & verification

Official CIPO records

Canadian Patents DatabaseClaims, description, documents and status.CIPO

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