Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669307 | Parking and maneuvering valve for trailers having a spring-loaded parking brake | — | 2003-12-30 |
| 6120302 | Switching valve for a multiple-circuit vehicle brake system | Ansgar Fries | 2000-09-19 |
| 5718486 | Electropneumatic brakes system for motor vehicles | Ansgar Fries | 1998-02-17 |
| 4921311 | Trailer brake valve for utility vehicles | Wolfgang Rauscher | 1990-05-01 |