| 1929 WALTER Tension Mechanism Embroidering Machines |
| 1929 NEIKIRK Brake Release Mechanism Railway Cars |
| 1929 PALMERO Automatic Dumping Mechanism Vehicles |
| 1929 MCCANN Breech Mechanism For Guns Patent |
| 1929 ZELIE Combination Locking Mechanism Vehicles |
| 1929 AIR LINE TRANSP ATION Lift Mechanism Aircraft |
| 1929 WOOD Locking Mechanism Dumping Bodies Art |
| 1929 DRENNING Auxiliary Spring Mechanism Trucks |
| 1929 CREMEAN Door Locking Mechanism Patent Print |
| 1929 HEINRICH Safety Mechanism Motor Cars Art |
| 1929 COLBY Switch Locking Mechanism Patent Print |
| 1929 BUESCHER Key Mechanism Wind Musical Instruments |
| 1929 LOVEJOY Transporting Mechanism Hoisting Machines |
| 1929 SYMINGTON Auxiliary Spring Mechanism Trucks |
| 1929 BANKS Record Playing Mechanism Patent Print |
| 1929 LILLEY Gear Shift Mechanism Patent Print |
| 1929 ENLOE Landing Mechanism Aeroplanes Art |
| 1929 LOSH GEORGE Organ Mechanism Patent Print |
| 1929 HANS Mechanism Feeding Cartridge Shell Bases |
| 1929 UNITED Shuttle Mechanism Shoe Sewing Machines |