| 1938 GRINDALL Track Rail Flaw Detecting Art |
| 1938 BUDD EDWARD G MFG CO Rail Car Truck Patent |
| 1938 JOSEPH Rail Sweep For Railway Cars Patent |
| 1938 CARL Transporting Rail Vehicles On Land |
| 1938 CHARLES Combined Road Rail Vehicle Art |
| 1938 SOULIS Combined Highway Rail Vehicle Axle |
| 1938 NAMPA Combined Road And Rail Vehicle Patent |
| 1938 POOR CO Rail Wheel Flange Lubricator Art |
| 1938 FLORENCE Convertible Rail Highway Vehicle |
| 1938 RICHTERKESSING Rail Operated Circuit Controller |
| 1938 WARR Rail And Wheel Flange Lubricator Art |
| 1938 STRATTON Rail Inspection Apparatus Patent |
| 1938 COUZIN ATTWOOD PROPRIETARY L Rail Truck Art |
| 1938 UNION SWITCH SIGNAL CO Track Rail Contactor |
| 1938 SMITH CARL Rail Brake Patent Print Art |
| 1938 TRANSP SYSTEMS INC Combined Road Rail Vehicle |
| 1938 WESTINGHOUSE AIR BRAKE CO Rail Brake Patent |
| 1938 GEN ELECTRIC Rail Inspection Apparatus Art |
| 1938 DRAKE Rail Flaw Detector Mechanism Patent |
| 1938 DEAN WALTER Rail Car Truck Patent Print Art |
| 1938 MARTIN EBELL Rail Truck Patent Print Art |
| 1938 SPRAKE MUNFORD Rail Lubricator Patent Print |
| 1938 PENNSYLVANIA Track Rail Flaw Detecting Art |
| 1938 LIVINGSTON Track Rail Contactor Patent |
| 1938 FAIRMONT Rail Sweep Railway Cars Art Print |
| 1938 SPERRY PROD INC Rail Flaw Detector Mechanism |
| 1938 WILHELM Power Transmission Gear Rail Vehicles |
| 1938 NACHOD Rail Operated Circuit Controller Art |
| 1938 MAIN Combined Road And Rail Vehicle Patent |