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Expired Canadian patentCanada

Hypodermic syringe

CA 59446 A · Owner: Robinson, Stillman Williams · Inventors: Robinson, Stillman Williams; Detmers, Henry Johnson

CIPO record

Overview

Drawings and full text

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

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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 March 26, 1898. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 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.
FiledMarch 7, 1898
GrantedMarch 26, 1898
Term endedMarch 26, 1915
Patent numberCA 59446 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

189919011903190519071909191119131915Application filedMarch 7, 1898Patent grantedMarch 26, 1898Term endedMarch 26, 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.