| 1961 TICHENOR Toggle Firing Mechanism Firearms |
| 1961 CONRAD Mechanism Firing Explosives Art |
| 1961 HYDRO PERF Mechanism Firing Explosives Art |
| 1961 SERGAY Sealing Revolver Firing Chamber Art |
| 1961 XAMAX A G Firing Principles Calculator Art |
| 1961 BENJAMIN Firing Control Switch Patent Print |
| 1961 IVY Firing Mechanism Bolt Action Repeating Rifle |
| 1961 HIGH STANDARD CORP Firing Mechanism Firearms |
| 1961 WALTER Firing Principles Calculator Patent |
| 1961 SILSBY Controlled Burst Firing Mechanism |
| 1961 GRANDY ANDREW Firing Mechanism Patent Print |
| 1961 ERNEST Firing Mechanism Automatic Firearms |
| 1961 WALTON Dual Firing Trigger Gun Aiming Mechanism |
| 1961 COLEMAN Selective Firing Apparatus Patent |
| 1961 FLETCHER Firing Mechanism A Salvo Gun Art |
| 1961 SEFRIED Firing Mechanism Firearms Art Print |
| 1961 GEN MOTORS CORP Sealing Revolver Firing Chamber |
| 1961 WESTERN NORTH AMERICA Selective Firing Art |
| 1961 LIZZA Firearm Firing Mechanism With Disconnector |
| 1961 HERCULES POWDER CO LTD Firing Device Patent |