Model gun with trajectory control function
CA 2182149 C · Owner: Western Arms · Inventors: Kunimoto, Keiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
A model gun with trajectory control function which comprises a, barrel structure including an outer barrel member and an inner barrel member, a tubular member provided in a rear end portion of the outer barrel member for forming a bullet holding portion by which a spherical sham bullet is temporarily held to be shot with gas pressure and a bullet guiding portion by which the spherical sham bullet shot from the bullet holding portion is guided into the inner barrel member and a, slippery member having a bullet contacting surface lower in friction coefficient than an inner surface of the bullet guiding portion and provided on an inner surface of a lower part of the bullet guiding portion in …
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 July 26, 1996 and granted July 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2018.
- 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.