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Expired Canadian patentCanada

Wireless telegraphy apparatus

CA 74799 A · Owner: Marconi, Guglielmo · Inventors: Marconi, Guglielmo

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 February 18, 1902. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 1919.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 7, 1900
GrantedFebruary 18, 1902
Term endedFebruary 18, 1919
Patent numberCA 74799 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

1901190319051907190919111913191519171919Application filedNov 7, 1900Patent grantedFeb 18, 1902Term endedFeb 18, 1919

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.