Patent Yard Sign in
Expired Canadian patentCanada

Controllers for electric motors

CA 97232 A · Owner: Weismuller, Rudolph Edward · Inventors: Paris, William A.

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.

Google PatentsCIPO record

Why it's free to use

  • Granted January 30, 1906. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 1923.
  • 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 15, 1902
GrantedJanuary 30, 1906
Term endedJanuary 30, 1923
Patent numberCA 97232 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

1903190619091912191519181921Application filedNov 15, 1902Patent grantedJan 30, 1906Term endedJan 30, 1923

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.