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Expired Canadian patentCanada

Cartridge for frangible projectile

CA 1256743 A · Owner: Szabo, Attila · Inventors: Szabo, Attila

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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Abstract From the Canadian patent

A cartridge with a frangible projectile usable in an automatic or semi-automatic fire-arm for, instance a pistol, wherein the propellant gases are initially expanded to recoil the breech block and the further expanded to propel the frangible projectile without breaking the same until impact.

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 July 4, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 4, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 1, 1985
GrantedJuly 4, 1989
Term endedJuly 4, 2006
Patent numberCA 1256743 A
Classification (IPC)F42B5/30

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedAug 1, 1985Patent grantedJuly 4, 1989Term endedJuly 4, 2006

Sources & verification

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