Expired Canadian patentCanada
Ammunition improvements to permit firing of a conventional closed chamber cartridge in an open chamber breech mechanism
CA 879217 A · Owner: Trw Inc. · Inventors: David Dardick
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordNo Claude kit for weapons
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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 August 24, 1971. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 24, 1988.
- 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—
GrantedAugust 24, 1971
Term endedAugust 24, 1988
Patent numberCA 879217 A
Classification (IPC)F42B5/02 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.