Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6082406 | Pneumatic pilot-operated control valve assembly | John A. Kempf | 2000-07-04 |
| 4966183 | Pressure regulator | — | 1990-10-30 |
| 4484668 | Controller for vehicle retarder | — | 1984-11-27 |