Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883000 | Stub axle truck | — | 1989-11-28 |
| 4874065 | Parking brake system for railway vehicles | — | 1989-10-17 |
| 4842341 | Brake pipe pressure modulating valve device | Lawrence E. Vaughn, Walter E. Rojecki | 1989-06-27 |
| 4799741 | Parking brake system for railway vehicles | — | 1989-01-24 |