| 1949 HAAS Gun Loading Mechanism Patent Print Art |
| 1949 DALY Adjustable Cam Mechanism Patent Print |
| 1949 GALLAGHER Timing Mechanism Patent Print Art |
| 1949 ANDERSON Gripper Mechanism Patent Print Art |
| 1949 CHALMERS Coupling Mechanism Patent Print |
| 1949 IBM Adjustable Cam Mechanism Patent Print |
| 1949 KNOWLTON Gun Primer Mechanism Patent Print |
| 1949 COM SPRINGFIELD Sear Mechanism Patent Print |
| 1949 BERNARD Swash Plate Mechanism Patent Print |
| 1949 KENDALL Fire Control Mechanism Patent Print |
| 1949 GAIDOS Fire Control Mechanism Patent Print |
| 1949 BROWNING VAL Firing Mechanism Patent Print |
| 1949 GAENSSLE PAUL Brake Mechanism Patent Print |
| 1949 CUMMINS Boat Oar Mechanism Patent Print Art |
| 1949 KONOLD Bow Trigger Mechanism Patent Print |
| 1949 RICHARDSON Window Mechanism Patent Print |
| 1949 GIBSON Elevating Mechanism Patent Print Art |
| 1949 PAUL Board Leveling Mechanism Patent Print |
| 1949 NEWELL Gyro Control Mechanism Patent Print |
| 1949 RAICHE Handling Line Mechanism Patent Print |
| 1949 GLENN MORSE Timer Mechanism Patent Print |
| 1949 ALFRED Escapement Mechanism Patent Print |
| 1949 BUDD CO Brake Mechanism Patent Print Art |
| 1949 OLIVER Gun Primer Mechanism Patent Print |