| 1964 JAY Hopper Discharge Outlet Closure Assembly |
| 1964 CHALLENGE COOK BROS INC Vehicle Hopper Closure |
| 1964 SMITH Hopper Discharge Outlet Closure Assembly |
| 1964 TALBOT WAGGONFAB Tilting Section Hopper Car |
| 1964 FLOEHR Hopper Door Locking Mechanism Patent |
| 1964 UNITCAST CORP Hopper Door Pivot Latch Assembly |
| 1964 BERNARD Mobile Hopper Poultry Feeder Patent |
| 1964 JAY R SHEESLEY Hopper Car Door Lock Patent |
| 1964 AUKSEL Railway Hopper Cars Patent Print Art |
| 1964 BORGER Pneumatic Discharge Hopper Arrangement |
| 1964 BUSCHBOM Combined Hopper Bunk Feeder Patent 36622 |
| 1964 ENTPR Sliding Hopper Closure Outlet Assembly |
| 1964 ENTPR Hopper Closure Outlet Assembly Art |
| 1964 FLOEHR Hopper Door Pivot Latch Assembly Art |
| 1964 KENDRICK Hopper Closure Outlet Assembly Art |
| 1964 SMITH Railway Hopper Car Closure Locking Mechanism |
| 1964 GEN AM TRANSPORT Railway Hopper Cars Patent |
| 1964 UNITCAST CORP Hopper Door Locking Mechanism |
| 1964 TAGGART Vehicle Hopper Closure Patent Print |
| 1964 KONIG Tilting Section Hopper Car Patent |
| 1964 SMITH Hopper Car Door Lock Patent Print Art |
| 1964 NOVELLI Door Control Mechanisms Hopper Cars |
| 1964 COLLINS Cargo Vehicle With Clam Shell Hopper |
| 1964 PULLMAN INC Pneumatic Discharge Hopper Arrangement |
| 1964 JAY Railway Hopper Car Closure Locking Mechanism |
| 1964 DOREY Sliding Hopper Closure Outlet Assembly |