Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9725969 | Positive lock system | Dennis P. Nguyen | 2017-08-08 |
| 9422788 | Straight-bore back pressure valve | Dennis P. Nguyen | 2016-08-23 |
| 8636058 | Straight-bore back pressure valve | Dennis P. Nguyen | 2014-01-28 |