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Expired Canadian patentCanada

Closure cap for shotgun shells

CA 849829 A · Owner: Dynamit Nobel Aktiengesellschaft · Inventors: Ernst Frobel; Hans Umbach; Thomas Schinnerer

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 August 25, 1970. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 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—
GrantedAugust 25, 1970
Term endedAugust 25, 1987
Patent numberCA 849829 A
Classification (IPC)F42B5/26 +2 more

Timeline

Timeline From CIPO dates

197119731975197719791981198319851987Patent grantedAug 25, 1970Term endedAug 25, 1987

Sources & verification

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