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Expired Canadian patentCanada

Dental handpiece

CA 58473 A · Owner: Pedersen, Johannes Theodor · Inventors: Pedersen, Johannes Theodor

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 December 22, 1897. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 1914.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 22, 1897
GrantedDecember 22, 1897
Term endedDecember 22, 1914
Patent numberCA 58473 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

189819001902190419061908191019121914Application filedNov 22, 1897Patent grantedDec 22, 1897Term endedDec 22, 1914

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.