Expired Canadian patentCanada
Hammer construction for guns
CA 212291 A · Owner: The Auto Ordnance Corp. · Inventors: Theodore Henry Erickhoff
Overview
Drawings and full text
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.
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 June 28, 1921. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 28, 1938.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 28, 1921
Term endedJune 28, 1938
Patent numberCA 212291 A
Classification (IPC)F41A3/00 +1 more
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.