A handgun having metallic rails within a polymeric frame
CA 2249629 C · Owner: Schmitter, Edward P. · Inventors: Miller, Harold L.; Erickson, Milton W.; Schmitter, Edward P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
The present invention is a handgun (10) having a polymeric frame (30) with metallic rails (70) that are inserted within the frame after the frame has been formed by a molding process. The rails are inserted into recesses formed in a channel (40) within the frame, before the frame has completely cooled and contracted. The rails comprise a pair of front rails (72 74) and a pair of , rear rails (76, 78). The rear pair of rails is positioned within rear recesses and held in place by the sear block (18). The front pair of rails is positioned within front recesses (52, 54) and held in place by a plurality of metallic parts. The parts includes a horseshoe (120) an unlock block (130), and 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 March 20, 1997 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2019.
- 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.