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Expired Canadian patentCanada

Potato digger shaker

CA 83809 A · Owner: Stark, Lars Johan · Inventors: Stark, Lars Johan

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 November 10, 1903. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 1920.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 19, 1903
GrantedNovember 10, 1903
Term endedNovember 10, 1920
Patent numberCA 83809 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190419061908191019121914191619181920Application filedOct 19, 1903Patent grantedNov 10, 1903Term endedNov 10, 1920

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.