Patent Yard Sign in
Expired Canadian patentCanada

Insect ring shield for trees

CA 60604 A · Owner: Henderson, Archibald · Inventors: Henderson, Archibald

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 July 15, 1898. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 1915.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 20, 1898
GrantedJuly 15, 1898
Term endedJuly 15, 1915
Patent numberCA 60604 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

189919011903190519071909191119131915Application filedJan 20, 1898Patent grantedJuly 15, 1898Term endedJuly 15, 1915

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.