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Expired Canadian patentCanada

Trolley bell ringer

CA 57748 A · Owner: Gubitz, William Julius · Inventors: Gubitz, William Julius

CIPO record

Overview

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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, 1897. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 9, 1914.
  • 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 16, 1895
GrantedOctober 9, 1897
Term endedOctober 9, 1914
Patent numberCA 57748 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

1896189819001902190419061908191019121914Application filedOct 16, 1895Patent grantedOct 9, 1897Term endedOct 9, 1914

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.