| 1940 JOYCE Wing Flap Patent |
| 1940 AVERY Rotative Wing Aircraft Patent Print |
| 1940 STEWART HARRY Aircraft Wing Patent Print |
| 1940 ZAP DEV CORP Wing Flap Patent Print Art |
| 1940 RENATO CONTINI Airplane Wing Patent Print |
| 1940 OSCAR Rotating Wing Aircraft Patent Print |
| 1940 HANDLEY Aircraft Wing System Patent Print |
| 1940 WEYMOUTH FREDERICK Wing Slot Patent Print |
| 1940 BURNELLI All Wing Airplane Patent Print Art |
| 1940 WALTER Aircraft Supporting Wing Patent |
| 1940 CURTISS WRIGHT CORP Wing Slot Patent Print |
| 1940 CHARLES Aircraft Wing Construction Patent |
| 1940 SCHAIRER Rotary Wing Aircraft Patent Print |
| 1940 BUDD EDWARD G MFG CO Airplane Wing Patent |
| 1940 HENRICH Rotating Wing Aircraft Patent Print |
| 1940 DE SEVERSKY Aircraft Wing Patent Print Art |
| 1940 SEVERSKY AIRCRAFT CORP Aircraft Wing Patent |
| 1940 OLIVER Tanden Wing Monoplane Patent 42341 |
| 1940 FRANK TUPTA Airplane Wing Patent Print Art |
| 1940 HERB Retractable Wing Tip Float Patent |
| 1940 BOYD Airplane Wing And Wing Spar Patent |
| 1940 EVANS DONALD Airplane Wing Flap Patent |
| 1940 ROLAND Variable Area And Camber Wing Patent |