Patent 1805383 Automatic pistol (1931)

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

Patent 4151782 Handgun with indexing means (1979)

Patent 4155187 Manually cycled pistol (1979)

Patent 4342169 Manually cycled pistol (1982)

Patent 4897950 Locking device for the crane of a revolver (1990)

Patent 5437118 Frame plug for semi-automatic handguns (1995)

Patent EP 0239544 B1 (1990)

Patent EP 0343115 B1 (1994)

Patent EP 0359715 B1 (1994)

Patent EP 0364408 A1 (1990)

Patent US 2010/0031812 A1 Delayed blowback firearms with novel mechanisms for control of recoil and muzzle climb

Patent US 2011/0225862 A1 Reciprocating barrel pistol (2011)

Armorers manual Glock Safe Action pistols

Armorers manual P228

Automatic pistol shooting (by Walter Winas) (1915)