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Expired Canadian patentCanada

Armament system

CA 1290178 C · Owner: General Electric Company · Inventors: Bulman, Melvin John

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.

Abstract From the Canadian patent

An armament system provides a launch tube filled with a mixture of gaseous propellant and a projectile possessing an external surface configuration which is effective to initiate a ram jet effect between the external surface of said projectile and the inner wall of said launch tube when said projectile is inserted at a high velocity into and along said tube.

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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 5, 1987
GrantedOctober 8, 1991
Term endedOctober 8, 2008
Patent numberCA 1290178 C
Classification (IPC)F41A1/04 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 5, 1987Patent grantedOct 8, 1991Term endedOct 8, 2008

Sources & verification

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