Reloadable stun grenade
CA 2014930 C · Owner: Def-Tec Corporation · Inventors: Anderson, Donald Lee; Pinkney, Barry Dwayne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
Stun grenade includes a steel housing having a steel tubular body with steel end members brazed to the ends of the tubular body, and a brass collar member threadably received in a threaded central opening in one of the end members for supporting an explosive charge in the housing. At the inner end of the collar member is a cylindrical portion to which a tubular container filled with the explosive charge is attached. The outer diameter of the tubular container is less than the minimum diameter of the threaded opening in the one end member to permit the tubular container to be inserted through the threaded opening while attached to the collar member. At the outer end of the collar member is a …
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 April 19, 1990 and granted March 19, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 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.
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.