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Expired Canadian patentCanada

Fire retort

CA 116183 A · Owner: Calkins, Rollin N. · Inventors: Calkins, Rollin N.

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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 January 19, 1909. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 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.
FiledSeptember 25, 1907
GrantedJanuary 19, 1909
Term endedJanuary 19, 1926
Patent numberCA 116183 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

1908191019121914191619181920192219241926Application filedSep 25, 1907Patent grantedJan 19, 1909Term endedJan 19, 1926

Sources & verification

Official CIPO records

Canadian Patents DatabaseClaims, description, documents and status.CIPO

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.