Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5832957 | Valve having at least one annular valve seat element | Max Zumbuhl, Hans R. Bucher | 1998-11-10 |
| 5669413 | Control valve having an actuating drive and method therefor | Andreas Hegglin, Giuseppe Pulli | 1997-09-23 |