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Expired Canadian patentCanada

Lantern

CA 179682 A · Owner: Wilkstrom, Karl G.F. · Inventors: Wilkstrom, Karl G.F.

CIPO record

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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 October 9, 1917. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 9, 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.
FiledOctober 5, 1916
GrantedOctober 9, 1917
Term endedOctober 9, 1934
Patent numberCA 179682 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

191719191921192319251927192919311933Application filedOct 5, 1916Patent grantedOct 9, 1917Term endedOct 9, 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.