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Expired Canadian patentCanada

Firearm magazine and method for preventing the shells from jamming

CA 1280924 C · Owner: Dieringer, Dale E. · Inventors: Dieringer, Dale E.

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

FIREARM MAGAZINE AND METHOD FOR PREVENTING THE SHELLS FROM JAMMING" ABSTRACT OF THE DISCLOSURE, The invention relates to an improvement in a multiple-shell weapon magazine or clip of the type employing either one or a pair of transversely-curved negator springs fastened to a particular sidewall of the cartridge chamber alongside the stack to lift the shells one-at-a-time through the open top thereof on a follower which is characterized by the spring or springs being so arranged and sized that the rearmost incurled edge of one seats within the annular grooves encircling the rear ends of the shells in the stack while the foremost incurled edge of the same or another spring curls around the …

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 March 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 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.
FiledDecember 15, 1987
GrantedMarch 5, 1991
Term endedMarch 5, 2008
Patent numberCA 1280924 C
Classification (IPC)F41A9/65

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedDec 15, 1987Patent grantedMarch 5, 1991Term endedMarch 5, 2008

Sources & verification

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