Controlled ignition of propellant charges by coating propellant grains
CA 939967 A · Owner: United States (Government Of The) Of America As Represented By The Sectary Of The Army (The) · Inventors: Silverstein, Martin S.; Stiefel, Ludwig; Kowalick, James F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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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 January 15, 1974. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1991.
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Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.