Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685332 | Valve assembly | Yuejin Gong, Randolf Kortge, Hans-Jurgen Lauth, Van Doan Nguyen | 1997-11-11 |
| 5597008 | Pressure-limiting valve and method of setting opening pressure of the pressure-limiting valve | Hans-Jurgen Lauth, Van Doan Nguyen, Randolf Kortge | 1997-01-28 |