Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869557 | Driver brake valve | Eduard Gerum, Erik Hefter, Manfred Weissflog | 1989-09-26 |
| 4253480 | Pressure regulator for fluid pressures | Heinrich Kummeke, Hans Kupfer, Joachim Rau | 1981-03-03 |