| 1929 JANDUS HERBERT Clamp GEN SPRING BUMPER CORP |
| 1929 GEN MOTORS CORP Metal Running Board Patent |
| 1929 GEN MOTORS RES CORP Heater Lubricating Oil |
| 1929 GEN MFG CORP Mechanical Ball Game Patent |
| 1929 GEN STEEL CASTINGS CORP Locomotive Structure |
| 1929 GEN SPRING BUMPER CORP Bumper Clamp Patent |
| 1929 GEN STEEL CASTINGS CORP Locomotive Spring Rigging |
| 1929 GEN STEEL CASTINGS CORP Pilot Beam Patent |
| 1929 GEN MOTORS CORP Automobile Shipping Art |
| 1929 JANDUS HERBERT Bumper GEN SPRING BUMPER CORP |
| 1929 GEN SPRING BUMPER CORP Clamp Patent Print |
| 1929 GEN SPRING BUMPER CORP Bumper Patent Print |
| 1929 GEN MOTORS CORP Car Truck Construction Art |
| 1929 GEN MOTORS CORP Pressed Steel Running Board |
| 1929 GEN STEEL CASTINGS CORP Booster Motor Support |
| 1929 GEN SPRING BUMPER CORP Resilient Clamp Art |
| 1929 GEN STEEL CASTINGS CORP Railway Truck Art |
| 1929 GEN MOTORS CORP Decking Device Patent Print |
| 1929 GEN MOTORS CORP Lubricating System Motor Vehicles |
| 1929 GEN MOTORS CORP Special Truck Patent Print |