Patent 3285133 Gas operated semi-automatic firearm (1966)
Patent 4299046 Single shot survival rifle (1981)
Patent 4867040 Self-unlocking device for recoiling bolt carrier and barrel in a semi-automatic rifle (1989)
Patent 4932148 Shoulder-fired semi-automatic rifle (1990)
Patent 4932309 Trigger mechanism for semi-automatic rifle (1990)
Patent Des. 304062 Semi-automatic rifle (1989)
Patent US 2012/0047786 A1 Modular firearm stock system
Patent US 6374718 B1 Silencer for shotguns and a method of making the same
Patent US 6862832 B2 Digital elevation knob
Patent 35877 Muzzle-Loading ordnance (1862)
Patent 305050 Magazine for fire arms (1884)
Patent 373410 Repeating gun or fire arm (1887)
Patent 522508 Recoil check for ordnance (1894)
Patent 547454 Recoil operated firearm (1895)
Patent 579401 Recoil operated gun (1897)
Patent 581296 Automatic Firearm (1897)
