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Expired Canadian patentCanada

Typewriter mechanism

CA 129237 A · Owner: Hess, Edward Bernard · Inventors: Hess, Edward Bernard

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 November 15, 1910. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 15, 1927.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 4, 1910
GrantedNovember 15, 1910
Term endedNovember 15, 1927
Patent numberCA 129237 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

191119131915191719191921192319251927Application filedJune 4, 1910Patent grantedNov 15, 1910Term endedNov 15, 1927

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.