Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4339222 | Door locking mechanism for hopper car doors | — | 1982-07-13 |
| 4295430 | Railway hopper car latch mechanism | Ray L. Ferris | 1981-10-20 |
| 4291631 | Railway car side discharge door locking arrangement | — | 1981-09-29 |
| 4280778 | Hopper car door operating mechanism | — | 1981-07-28 |
| 4278382 | Door latch mechanism for bottom dump hopper car | — | 1981-07-14 |
| 4224875 | Static switching apparatus for passenger vehicle | Thomas R. Schmitz | 1980-09-30 |
| 4213725 | Double locking door latch mechanism for railway hopper cars | — | 1980-07-22 |