Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5050939 | Fail-safe wheel service brake system | Paul J. Middelhoven, Eric Johnson | 1991-09-24 |
| 4893879 | Fail-safe wheel service brake system | Paul J. Middelhoven, Eric Johnson | 1990-01-16 |