Patent 2525886 Safety for firearms (1950)

Patent 2628536 Gas-operated automatic firearm with forwardly moving barrel (1953)

Patent 2669160 Belt feed for firearms (1954)

Patent 2765710 Breech block controlling mechanism for a retarded blow back gun (1956)

Patent 2843023 Recoil mechanism for recoil-operated firearms (1958)

Patent 3009396 Gas piston operated automatic gun (1961)

Patent 3020662 Repeating magazine rifle with rotatable and forwardly movable barrel (1962)

Patent 3184876 Firing pin safety mechanism for firearms (1962)

Patent 3235997 Bipod gun mount (1964)

Patent 3332162 Combined rifle and grenade launcher (1967)

Patent 3343457 Housing structure for an automatic firearm (1967)

Patent 3387398 Cartridge feed in lever-operated rifle (1968)

Patent 4061074 Ammunition feed mechanism (1977)

Patent 4311082 General purpose automatic weapon system (1982)

Patent 4587879 Weapon cartridge feeder apparatus and method (1986)

Patent 4693169 Control device for rapid firing particulary automatic weapons (1987)