| 1945 HOOVER Indicator Variable Pitch Propellers |
| 1945 GEORGE Variable Pitch Screw Propeller |
| 1945 GEN MOTORS CORP Variable Pitch Propeller Control |
| 1945 BERLINER Variable Pitch Propeller Patent |
| 1945 STEWART Variable Load Brake Patent Print |
| 1945 TRAMBLIE Variable Load Brake Patent Print |
| 1945 ESCHER WYSS MASCHF AG Variable Pitch Propeller |
| 1945 KETTERING Variable Pitch Propeller Control |
| 1945 HOOVER Variable Pitch Propeller Patent |
| 1945 ROTOL LTD Variable Pitch Airscrew Patent |
| 1945 WESTINGHOUSE AIR BRAKE CO Variable Load Brake |
| 1945 DOWN SIDNEY Variable Load Brake Patent |
| 1945 FARMER Variable Load Brake Patent Print Art |
| 1945 LEE Variable Camber Airplane Wing Patent |
| 1945 GASKELL Variable Pitch Airscrew Patent |
| 1945 CURT Variable Pitch Propeller Patent Print |
| 1945 ENGINEERING RES CORP Variable Pitch Propeller |
| 1945 MICHAEL Variable Pitch Propeller Patent |
| 1945 AERO ENGINEERING CORP Variable Pitch Propeller |
| 1945 KELLEY Variable Load Brake Patent Print Art |
| 1945 BRINER Variable Pitch Propeller Patent |