| 1960 GLUHAREFF Rotor Blade Counterbalance Means |
| 1960 AMERICAN STEEL FOUNDRIES Rotor Brake Patent |
| 1960 KAMAN Rotor For A Helicopter Patent Print |
| 1960 DAVIS JR Rotor Brake Patent Print Art |
| 1960 LEMONT Rotor Blade Folding Mechanism Patent |
| 1960 BYRON Helicopter Rotor Head Rotor Control |
| 1960 TACK Lever System For Rotor Brake Patent |
| 1960 BELL HELICOPTER CORP Rotor Hub Patent Print |
| 1960 STULEN Balance Tracking Rotor Blades Art |
| 1960 JENNEY DAVID Helicopter Rotor Patent Print |
| 1960 BOEING CO Rotor Blade Folding Mechanism Art |
| 1960 DE Rotor Hub Art |
| 1960 AMERICAN STEEL FOUNDRIES Lever System Rotor Brake |
| 1960 ROOT Jet Driven Helicopter Rotor Patent |
| 1960 KAMAN AIRCRAFT CORP Rotor A Helicopter Art |
| 1960 NAGLER Helicopter With Shrouded Ducted Rotor |
| 1960 PARSONS CORP Balance Tracking Rotor Blades |
| 1960 THEODORE Helicopter With Jet Driven Rotor |
| 1960 UNITED AIRCRAFT CORP Helicopter Rotor Art |
| 1960 HOWARD Angular Free Turbine Rotor Drive Art |
| 1960 YUAN SHAO Rotor Control Patent Print Art |