Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8668015 | Dual check valve | — | 2014-03-11 |
| 6296059 | Reverse circulating control valve | Rodney Leeb | 2001-10-02 |
| 6004114 | Hydraulic submersible pump for oil well production | Edmund C. Cunningham | 1999-12-21 |