Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9322481 | Rotating valve assembly including multi-lumen spherical valve | Thomas Wenchell, Michael Ross Kessell, Stephen Weir, Henry Bolanos | 2016-04-26 |
| 8663170 | Rotating valve assembly including multi-lumen spherical valve | Thomas Wenchell, Michael Ross Kessell, Stephen Weir, Henry Bolanos | 2014-03-04 |
| 7874308 | Rotating valve assembly | Michael Ross Kessell, Steven Lyle Weir, Henry Bolanos | 2011-01-25 |
| 7165568 | Rotating valve assembly | Michael Ross Kessell, Steven Lyle Weir, Henry Bolanos | 2007-01-23 |