| 1947 WOODS Multiple Gun Training Mechanism Art |
| 1952 BOWSER Gun Firing Mechanism With Cutout |
| 1965 PERKINS Piezoelectric Powered Gun Firing Mechanism |
| 1956 BRAXTON Gun Firing Mechanism Patent Print |
| 1945 TROTTER Machine Gun Feed Mechanism Patent |
| 1946 THRESH Gun Charging Mechanism Patent Print |
| 1944 OLSEN Automatic Gun Mechanism Patent Print |
| 1930 BOEING CO Gun Feeding Mechanism Patent |
| 1954 UNITED SHOE MACHINERY CORP Gun Cooling Mechanism |
| 1949 CLARK Toy Machine Gun Operating Mechanism |
| 1953 LENNON Gun Mount Brake Mechanism Patent |
| 1944 CAULKINS Gun Loading Mechanism Patent Print |
| 1945 REEK ROYAL Gun Feed Mechanism Patent Print |
| 1934 JOHNSTON Gun Sighting Elevating Mechanism |
| 1946 ALFRED Power Gun Turret Driving Mechanism |
| 1965 OLIN MATHIESON Gun Hammer Spring Mechanism |
| 1953 SIGMUND Gun Shell Feeding Mechanism Patent |
| 1947 BELL AIRCRAFT CORP Multiple Gun Training Mechanism |
| 1948 CUNNINGHAM Gun Control Compensating Mechanism |
| 1942 JOHN Gun Control Mechanism Patent Print Art |