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Expired Canadian patentCanada

Fire escape

CA 179159 A · Owner: Morck, Edward · Inventors: Makin, William J.; Morck, Edward; Schoonover, Noah F.

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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 September 4, 1917. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 4, 1934.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 21, 1917
GrantedSeptember 4, 1917
Term endedSeptember 4, 1934
Patent numberCA 179159 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

191819201922192419261928193019321934Application filedMarch 21, 1917Patent grantedSep 4, 1917Term endedSep 4, 1934

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.