Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8328163 | Vacuum valve with a sealing ring | Stefan Boesch | 2012-12-11 |
| 5755426 | Valve mechanism for a vacuum valve | — | 1998-05-26 |
| 5168896 | Mechanism for opening and closing valve | Tsutomu Taniguchi | 1992-12-08 |