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Expired Canadian patentCanada

Cord-like ignition devices for igniting safety fuses

CA 577292 A · Owner: Imperial Chemical Industries Limited · Inventors: Elwyn Jones; Vincent L. Evans; Thomas Murphy

CIPO record

Overview

Drawings and full text

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

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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.

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 June 9, 1959. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1976.
  • 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—
GrantedJune 9, 1959
Term endedJune 9, 1976
Patent numberCA 577292 A
Classification (IPC)F42C

Timeline

Timeline From CIPO dates

196019621964196619681970197219741976Patent grantedJune 9, 1959Term endedJune 9, 1976

Sources & verification

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