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Expired Canadian patentCanada

Sear lock and release mechanism

CA 841327 A · Owner: The Government Of The United States Of America Represented By The Secrary Of The Army · Inventors: Bengt I. Piskator; Walter S. Draper, Iii

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

No Claude kit for weapons

Claude doesn't help design weapons, ammunition or explosives, so this page has no Reinvent kit. To develop this one, work with a federally licensed manufacturer (many of these items are regulated) and a registered patent attorney or agent, listed on the USPTO roster.

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.

Why it's free to use

  • Granted May 12, 1970. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 1987.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 12, 1970
Term endedMay 12, 1987
Patent numberCA 841327 A
Classification (IPC)F41A25/00

Timeline

Timeline From CIPO dates

197119731975197719791981198319851987Patent grantedMay 12, 1970Term endedMay 12, 1987

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.