| 1970 LOCKHEED AIRCRAFT CORP Helicopter Rotor System |
| 1970 LOCKHEED AIRCRAFT CORP Rotor Locking Art |
| 1970 SCHMIDT Antinode Weight Assembly Rotor Blades |
| 1970 TROENG Boat Having Rotor Above A Wing |
| 1970 KISOVEC ADRIAN Rotor System Patent Print |
| 1970 BOLKOW GMBH Rotor Blade Construction Patent |
| 1970 EYRE Rotor Use On A Rotary Wing Aircraft |
| 1970 JENSEN Rotor Blade Pressure Sensing System |
| 1970 BOEING CO Rotor System Patent Print Art |
| 1970 DEAN Tail Rotor Biasing Device Patent Print |
| 1970 PETERSON Dual Rotor System Helicopters Art |
| 1970 SCHMIDT Helicopter Rotor System Patent |
| 1970 PFLEIDERER Rotor Blade Construction Patent |
| 1970 SALMUN Rotor Locking Device Patent Print |
| 1970 MOUILLE Rotor Rotary Wing Aircraft Art |
| 1970 ROLLS ROYCE Rotor Use On A Rotary Wing Aircraft |
| 1970 MOSINSKIS VICTOR Rotor Hub Patent Print Art |
| 1970 IVAN TROENG Boat Having Rotor Above A Wing |
| 1970 BOEING CO Rotor Hub Patent Print Art |
| 1970 UNITED AIRCRAFT CORP Tail Rotor Biasing |