| 1941 SEVERSKY AIRCRAFT CORP Aircraft Structure |
| 1941 SEVERSKY AIRCRAFT CORP Connecting Art |
| 1941 GEN AIRCRAFT CORP Airplane Wing Patent |
| 1941 UNITED AIRCRAFT CORP Airplane Patent Print |
| 1941 BELL AIRCRAFT CORP Auxiliary Motor Installation |
| 1941 BELL AIRCRAFT CORP Nacelle Construction Art |
| 1941 CONS AIRCRAFT CORP Aircraft Handling Gear |
| 1941 BELL AIRCRAFT CORP Movable Supporting Art |
| 1941 UNITED AIRCRAFT CORP Aircraft Patent Print |
| 1941 BELL AIRCRAFT CORP Control Column Patent |
| 1941 CONS AIRCRAFT CORP Retractable Gun Mount |
| 1941 UNITED AIRCRAFT CORP Flexible Connection |
| 1941 MCKAY HARRY Airfoil ST LOUIS AIRCRAFT CORP |
| 1941 GWINN JR Aircraft BREWSTER AERONAUTICAL CORP |
| 1941 UNITED AIRCRAFT CORP Propeller Aircraft Art |
| 1941 ST LOUIS AIRCRAFT CORP Airfoil Patent Print |
| 1941 SEVERSKY AIRCRAFT CORP Airfoil Patent Print |
| 1941 BELL AIRCRAFT CORP Airplane Structure Art |
| 1941 BELL AIRCRAFT CORP Wing Beam Patent Print |
| 1941 WOODS ROBERT Wing Beam BELL AIRCRAFT CORP |
| 1941 BELL AIRCRAFT CORP Stowable Control Column |
| 1941 BELL AIRCRAFT CORP Pressed Wing Rib Patent |
| 1941 CONS AIRCRAFT CORP Fuel Dump Valve Patent |
| 1941 BELL AIRCRAFT CORP Hinged Mount Patent |