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Expired Canadian patentCanada

Electric meter

CA 238917 A · Owner: The Packard Electric Co. Limited · Inventors: Carey W. Baker

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 March 25, 1924. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 1941.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 25, 1924
Term endedMarch 25, 1941
Patent numberCA 238917 A
Classification (IPC)G01R11/18

Timeline

Timeline From CIPO dates

192519271929193119331935193719391941Patent grantedMarch 25, 1924Term endedMarch 25, 1941

Sources & verification

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