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Expired Canadian patentCanada

Catoptric light

CA 117809 A · Owner: Pattison, James · Inventors: Pattison, James

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 April 13, 1909. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 13, 1926.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 30, 1908
GrantedApril 13, 1909
Term endedApril 13, 1926
Patent numberCA 117809 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190919111913191519171919192119231925Application filedDec 30, 1908Patent grantedApril 13, 1909Term endedApril 13, 1926

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.