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Expired Canadian patentCanada

Incandescent lamp for the combustion ofcoal oil and the like

CA 57770 A · Owner: Wendorf, Maximilian · Inventors: Wendorf, Maximilian; Meyenberg, Albert; Henlein, Siegmund

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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 13, 1897. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 1914.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1896
GrantedOctober 13, 1897
Term endedOctober 13, 1914
Patent numberCA 57770 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

189718991901190319051907190919111913Application filedMay 18, 1896Patent grantedOct 13, 1897Term endedOct 13, 1914

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.