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Expired Canadian patentCanada

Alarm mechanism

CA 192809 A · Owner: Beardmore, Jerome Colvig · Inventors: Beardmore, Jerome Colvig

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 September 23, 1919. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 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.
FiledJuly 5, 1917
GrantedSeptember 23, 1919
Term endedSeptember 23, 1936
Patent numberCA 192809 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

1918192019221924192619281930193219341936Application filedJuly 5, 1917Patent grantedSep 23, 1919Term endedSep 23, 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.