Patent Yard Sign in
Expired Canadian patentCanada

Changeable sign

CA 124403 A · Owner: Bouthiller, Albert · Inventors: Bouthiller, Albert; Dauley, Wesley Nelson

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Read the whole patent

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.

Why it's free to use

  • Granted March 15, 1910. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 15, 1927.
  • 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 27, 1909
GrantedMarch 15, 1910
Term endedMarch 15, 1927
Patent numberCA 124403 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

191019121914191619181920192219241926Application filedNov 27, 1909Patent grantedMarch 15, 1910Term endedMarch 15, 1927

Sources & verification

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