Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5492374 | Separable insertion-type pipe connection | Gunther Wiesner, Frank van de Poel, Kurt Schaible | 1996-02-20 |
| 5322259 | Proportional magnet valve | Alfred Trzmiel | 1994-06-21 |