Patent 1821463 Machine gun (1931)

Patent 2110165 Machine gun (1935)

Patent 1451443 Machine gun (1918)

Patent 1456625 Machine gun (1921)

Patent 1786207 Machine gun (1930)

Patent 2220663 Machine gun (1938)

Patent 1290854 Automatic rapid fire gun (1919)

Patent 1446635 Firearm (1923)

Patent 1852057 Spring mechanism for automatic firearm (1932)

Patent 2031383 Machine gun bolt mechanism (1936)

Patent 2113793 Machine gun and drum magasine therefor (1936)

Patent 2418462 Machine gun magazine and cradle therefor (1947)

Patent 2436937 Shell ejecting mechanism for machine guns (1948)

Patent 3998125 Belt feeder for an automatic weapon (1976)

Patent 3999461 Modular lightweight squad automatic weapon system (1976)

Patent 5117735 Machine gun with belt and magazine feed (1992)