Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4691737 | Brake control valve | — | 1987-09-08 |
| 4660894 | Proportioning brake valve with dual area secondary piston | Roy E. Bartholomew | 1987-04-28 |
| 4330157 | Modular control valve | — | 1982-05-18 |