Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7445019 | Gate valve having service position | Yoshi Takayama, John Duncan | 2008-11-04 |
| 7270311 | Pendulum gate valve | — | 2007-09-18 |
| 6896239 | Method and apparatus for locking a valve | — | 2005-05-24 |
| RE38318 | Bellows driver slot valve | — | 2003-11-18 |
| 6443426 | Slide lock for vacuum valve | — | 2002-09-03 |
| 6293306 | Throttle gate valve | — | 2001-09-25 |
| 5975492 | Bellows driver slot valve | — | 1999-11-02 |
| 5884899 | Half profile gate valve | — | 1999-03-23 |
| 5881998 | Half profile slot valve | — | 1999-03-16 |
| 5791632 | Quick release slide lock for vacuum valve | — | 1998-08-11 |
| 5597184 | Quick release clamp for bonnet and flange of gate valves | Fabian M. Van De Graff | 1997-01-28 |