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Expired Canadian patentCanada

Automatic apparatus for elevating cream into churns

CA 112809 A · Owner: Hunter, Frederick Henry · Inventors: Hunter, Frederick Henry

CIPO record

Overview

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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.

Google PatentsCIPO record

Why it's free to use

  • Granted July 7, 1908. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.
FiledMay 23, 1908
GrantedJuly 7, 1908
Term endedJuly 7, 1925
Patent numberCA 112809 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190919111913191519171919192119231925Application filedMay 23, 1908Patent grantedJuly 7, 1908Term endedJuly 7, 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.