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Expired Canadian patentCanada

Pump valve

CA 113159 A · Owner: Mcmakin, Richard B. · Inventors: Mcmakin, Richard B.; Mcmakin, William J.

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 July 28, 1908. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 1925.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 10, 1908
GrantedJuly 28, 1908
Term endedJuly 28, 1925
Patent numberCA 113159 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190919111913191519171919192119231925Application filedApril 10, 1908Patent grantedJuly 28, 1908Term endedJuly 28, 1925

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.