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Mechanism for delaying release of bolt after firing a firearm

US 3,420,140 A · Inventors: BERETTA CARLO PIETRO

USPTO PDF

Overview

The published document from the USPTO: abstract, claims, description and drawings. Open it full size

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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 USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents.

Why it's free to use

  • Granted January 7, 1969. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by January 7, 1986.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMarch 17, 1967
GrantedJanuary 7, 1969
Term endedJanuary 7, 1986
Application number—
Classification (CPC)F41A5/18
Length3 pages

Timeline

Timeline From USPTO dates

1968197019721974197619781980198219841986Application filedMarch 17, 1967Patent grantedJan 7, 1969Term endedJan 7, 1986

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