Magazine
CA 2175346 C · Owner: Weldle, Helmut · Inventors: Epp, Erwin; Bantle, Johannes-August; Weldle, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordNo 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
Magazine for a repeater firearm, comprising a) magazine tube (1) having an output end b) a feeder (7) movably disposed inside the magazine tube (1) alongside a path of motion extending from the output end to a limit stop and, c) a magazine spring (4) biasing the feeder (7) wherein, d) the magazine spring (4) is supported by an inset (6) which displaces the limit stop towards the output end of the magazine and thus reduces the capacity of the magazine.
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 September 8, 1995 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2017.
- 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.