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Expired Canadian patentCanada

Damper regulator

CA 58013 A · Owner: Mueller, Frederick T. · Inventors: Mueller, Frederick T.; Kieley, Timothy J.

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 5, 1897. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 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.
FiledOctober 25, 1897
GrantedNovember 5, 1897
Term endedNovember 5, 1914
Patent numberCA 58013 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

189819001902190419061908191019121914Application filedOct 25, 1897Patent grantedNov 5, 1897Term endedNov 5, 1914

Sources & verification

Official CIPO records

Canadian Patents DatabaseClaims, description, documents and status.CIPO

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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.