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Expired Canadian patentCanada

Regulator for fuel supply

CA 189666 A · Owner: Thompson, Alfred H. · Inventors: Thompson, Alfred H.

CIPO record

Overview

Drawings and full text

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.

Google PatentsCIPO record

Why it's free to use

  • Granted April 15, 1919. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 1936.
  • 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 10, 1918
GrantedApril 15, 1919
Term endedApril 15, 1936
Patent numberCA 189666 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

191919211923192519271929193119331935Application filedSep 10, 1918Patent grantedApril 15, 1919Term endedApril 15, 1936

Sources & verification

Official CIPO records

Canadian Patents DatabaseClaims, description, documents and status.CIPO

Cross-check elsewhere

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.