Patent Yard Sign in
Expired Canadian patentCanada

Hydro-carbon oil production

CA 186357 A · Owner: Hall, William Augustus · Inventors: Hall, William Augustus

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 September 3, 1918. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 3, 1935.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 7, 1918
GrantedSeptember 3, 1918
Term endedSeptember 3, 1935
Patent numberCA 186357 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

191919211923192519271929193119331935Application filedFeb 7, 1918Patent grantedSep 3, 1918Term endedSep 3, 1935

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.