Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830437 | Brake assurance circuit to preserve proper locomotive operting status | — | 1989-05-16 |
| 4802559 | Hydropneumatic brake actuator arranged to maintain a constant brake shoe clearance | Eugene Fourie | 1989-02-07 |