| 1930 GEORGE Motor Propelling Mechanism Boats Art |
| 1930 LEVEQUE Feed Mechanism Sewing Machines Art |
| 1930 ALBERT Driving Mechanism Amusement S Art |
| 1930 UNION Feeding Mechanism Sewing Machines Art |
| 1930 UNITED Feed Mechanism Sewing Machines Art |
| 1930 RAILWAY Locking Mechanism Switch Stands Art |
| 1930 BARNOW Propeller Mechanism Patent Print Art |
| 1930 FRED Steering Mechanism Coaster Wagons Art |
| 1930 FRANK Anchor Weighing Casting Mechanism Art |
| 1930 PAXTON Stop Mechanism Sewing Machines Art |
| 1930 STODDARD Delayed Action Valve Mechanism Art |
| 1930 DONOHUE Propeller Mechanism Aircraft Art |
| 1930 WILLIAM Brake Mechanism Motor Vehicles Art |
| 1930 MECKLEM Lock Mechanism Automobiles Art |
| 1930 LOKAFORD Vehicle Locking Mechanism Art |
| 1930 JOSEPH Looper Mechanism Sewing Machines Art |
| 1930 FRED Lifting Mechanism Dump Bodies Art |
| 1930 UNION Looper Mechanism Sewing Machines Art |
| 1930 AX Controlling Mechanism Aeroplanes Art |
| 1930 ADAMS Locking Mechanism Switch Stands Art |
| 1930 KALCK FRED Clock Mechanism Patent Print Art |
| 1930 DAVID Control Mechanism Sewing Machines Art |
| 1930 FAHRNEY Propelling Mechanism Boats Art |