| 1950 GEN MOTORS CORP Propeller Control Patent |
| 1950 GEN MOTORS CORP Spinner Mounting Patent |
| 1950 GEN MOTORS CORP Aircraft Propeller Patent |
| 1950 GEN MOTORS CORP Dual Rotation Propeller Art |
| 1950 GEN MOTORS CORP Draft Gear Patent Print Art |
| 1950 GEN MOTORS CORP Feed Mechanism Machine Guns |
| 1950 GEN MOTORS CORP Locomotive Coupling Art |
| 1950 GEN MOTORS CORP Accumulator Control Unit |
| 1950 GEN BRONZE CORP Shock Absorber Accelerator |
| 1950 GEN MOTORS CORP Domed Observation Car Art |
| 1950 GEN MOTORS CORP Bolt Mechanism Patent Print |
| 1950 GEN MOTORS CORP Spotlight Switch Patent |
| 1950 GEN MOTORS CORP Body Side Frame Patent |
| 1950 GEN TIME CORP Timing Mechanism Patent Print |
| 1950 GEN STEEL CASTINGS CORP Railway Pilot Structure |
| 1950 GEN MOTORS CORP Fluid Controlled Propeller |
| 1950 GEN STEEL CASTINGS CORP Railway Truck Art |
| 1950 GEN MOTORS CORP Metal Structure Patent |
| 1950 GEN MOTORS CORP Lading Impact Absorber Art |
| 1950 GEN MOTORS CORP Locomotive Cab Construction |
| 1950 GEN MOTORS CORP Hinge Patent Print Art |