Patent Yard Sign in
Expired Canadian patentCanada

Process of producing artificial wood

CA 77533 A · Owner: Helbing, Emil · Inventors: Helbing, Emil

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 23, 1902. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 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.
FiledOctober 10, 1901
GrantedSeptember 23, 1902
Term endedSeptember 23, 1919
Patent numberCA 77533 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190219041906190819101912191419161918Application filedOct 10, 1901Patent grantedSep 23, 1902Term endedSep 23, 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.