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Expired Canadian patentCanada

Minefield breaching system

CA 2031335 C · Owner: Pains-Wessex Limited · Inventors: Smith, John Leslie Charles

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

A minefield breaching system or apparatus and a delivery projectile therefor comprises a projectile arranged to be mounted on a rifle, light mortar or similar weapon and to be projected in a desired direction by firing a round from the weapon into the projectile; an explosive line connected directly or indirectly at one end thereof to the projectile; and detonation means arranged to be connected directly or indirectly to the explosive line at the other end thereof for detonation of the explosive line; the projectile comprising a rocket the motor of which is arranged for operational ignition upon a round from the weapon being fired into the projectile and, the projectile carrying a presence …

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

  • Filed December 3, 1990 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 3, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 3, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 3, 1990
GrantedJuly 26, 1994
Term endedDecember 3, 2010
Patent numberCA 2031335 C
Classification (IPC)F41H11/12 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedDec 3, 1990Patent grantedJuly 26, 1994Term endedDec 3, 2010

Sources & verification

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