Patent 593835 Recoil operated firearm (1897)

Patent 642018 Automatic machine gun (1900)

Patent 726167 Locking device for guns (1903)

Patent 802279 Firearm (1905)

Patent 861939 Gas operated gun (1907)

Patent EP 0277921 B1 (1991)

Patent EP 0277922 B1 (1991)

Patent 4126 Improvement in recoil automatic fire arms (1906)

Patent 8982 Revolver (1852)

Patent 753414 Recoil loading small arms (1904)

Patent 903998 Recoil loading small arm (1908)

Patent 944930 Automatic pistol and rifle (1909)

Patent 989432 Automatic firearm (1911)

Patent 1805383 Automatic pistol (1931)

Patent 3088378 Pistol with slidable and fixed breech block (1963)

Patent 4151782 Handgun with indexing means (1979)