Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4617868 | Railroad hopper car with self-contained discharge system | Brian T. Votaw | 1986-10-21 |
| 4542701 | Tamper-proof railroad hopper car door operating system | Robert T. Fischer | 1985-09-24 |