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Expired Canadian patentCanada

Rail joint

CA 79321 A · Owner: Wolhaupter, Benjamin · Inventors: Wolhaupter, Benjamin

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 February 10, 1903. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 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.
FiledJanuary 14, 1903
GrantedFebruary 10, 1903
Term endedFebruary 10, 1920
Patent numberCA 79321 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190419061908191019121914191619181920Application filedJan 14, 1903Patent grantedFeb 10, 1903Term endedFeb 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.