| 1929 UNION Looper Mechanism Sewing Machines Art |
| 1929 LEVIN Equalizing Mechanism Patent Print Art |
| 1929 BRIMM JR Control Mechanism Patent Print Art |
| 1929 PIETRO Bumper Mechanism Motor Vehicles Art |
| 1929 PIETZSCH Brake Mechanism Railway Cars Art |
| 1929 RAILWAY S Brake Mechanism Railway Cars Art |
| 1929 WICKS Valve Operating Mechanism Organs Art |
| 1929 PACKARD MOTOR CAR CO Locking Mechanism Art |
| 1929 GIUSEPPO Fall Board Operating Mechanism Art |
| 1929 MINER INC W H Shock Absorbing Mechanism Art |
| 1929 ENTPR Dump Car Door Operating Mechanism Art |
| 1929 ELLIOTT Trigger Mechanism Firearms Art |
| 1929 GILLEN Locking Mechanism Motor Vehicles Art |
| 1929 LEVEQUE Feed Mechanism Sewing Machines Art |
| 1929 WOOD Locking Mechanism Dumping Bodies Art |
| 1929 IRELAND AIRCRAFT INC Control Mechanism Art |
| 1929 FRAMBES Reflector Mechanism Automobiles Art |
| 1929 LUCKY Railroad Switch Locking Mechanism Art |
| 1929 UNITED Feed Mechanism Sewing Machines Art |
| 1929 ROSENBAUM Sewing And Pressing Mechanism Art |
| 1929 DREVES HENRY Key Mechanism Patent Print Art |
| 1929 JOSEPH Looper Mechanism Sewing Machines Art |
| 1929 ENTPR Car Door Operating Mechanism Art |
| 1929 HEINRICH Safety Mechanism Motor Cars Art |
| 1929 UNION Feeding Mechanism Sewing Machines Art |
| 1929 FREDERICK OSANN Clutch Stop Mechanism Art |
| 1929 REECE Driving Stopping Mechanism Art Print |
| 1929 KRODEL Propeller Mechanism Patent Print Art |
| 1929 BARRETT Hoisting Mechanism Patent Print Art |
| 1929 PITCAIRN Helicopter Control Mechanism Art |
| 1929 SENSIBAR Unloading Mechanism Ships Art |
| 1929 UNITED Thread Cutting Mechanism Art Print |
| 1929 BURTON Trigger Mechanism Firearms Art Print |
| 1929 LEWIS Needle Shogging Mechanism Art Print |
| 1929 CARD Feeding Mechanism Sewing Machines Art |
| 1929 ENLOE Landing Mechanism Aeroplanes Art |
| 1929 NUETZEL Braking Mechanism Car Trucks Art |