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Expired Canadian patentCanada

Caseless compressed propellant charge

CA 936697 A · Owner: Dynamit Nobel Aktiengesellschaft · Inventors: Heinrich Brachert; Heinz Ratz; Heinz Gawlick

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

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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 November 13, 1973. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 13, 1990.
  • 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—
GrantedNovember 13, 1973
Term endedNovember 13, 1990
Patent numberCA 936697 A
Classification (IPC)F42B5/19 +2 more

Timeline

Timeline From CIPO dates

197419761978198019821984198619881990Patent grantedNov 13, 1973Term endedNov 13, 1990

Sources & verification

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