| 1958 BACHMAN Rotor Brake Head Guide Patent Print |
| 1958 AMERICAN STEEL FOUNDRIES Rotor Brake Head Guide |
| 1958 BELL AIRCRAFT CORP Helicopter Rotor Blade |
| 1958 AMERICAN STEEL FOUNDRIES Rotor Brake Patent |
| 1958 PREWITT Rotor Blade With Deicing Means Art |
| 1958 UNITED AIRCRAFT CORP Rotor Head Patent |
| 1958 CASEY Rotor Brake Actuating Mechanism Art |
| 1958 LEONI RAY Rotor Head Patent Print Art |
| 1958 METZGER Helicopter Rotor Blade Patent Print |
| 1958 AMERICAN Rotor Brake Actuating Mechanism |
| 1958 ANDRZEJEWSKI Rotor Brake Suspension Patent |
| 1958 THEODOR Rotor Arrangement Rotary Wing Aircraft |
| 1958 AMERICAN STEEL FOUNDRIES Rotor Brake Mounting |
| 1958 FLESCH NORMAN Rotor Brake Patent Print Art |
| 1958 TACK Rotor Brake Actuating Mechanism Patent |
| 1958 CASEY WILLIAM Rotor Brake Patent Print Art |
| 1958 AMERICAN STEEL FOUNDRIES Rotor Brake Suspension |
| 1958 BERNARD Coaxial Rotor Helicopter Patent |
| 1958 SNCASO Rotor Arrangement Rotary Wing Aircraft |
| 1958 VLADIMIR Intermittent Action Ball Cam Rotor |
| 1958 EDWARD Automatic Tail Rotor Control Patent |
| 1958 POLANIN Rotor Brake Mounting Patent Print |
| 1958 SCHLIEKELMANN Helicopter Rotor Blade Patent |