Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6695058 | Method and apparatus for cleaning boreholes | — | 2004-02-24 |
| 6595296 | Hydraulic control assembly | — | 2003-07-22 |
| 6508309 | Valve assembly | — | 2003-01-21 |
| 6494269 | Downhole apparatus for controlling fluid pressure | Glen Batten | 2002-12-17 |
| 6289991 | Downhole apparatus | — | 2001-09-18 |
| 6286594 | Downhole valve | — | 2001-09-11 |
| 6230808 | Downhole apparatus | Glen Batten | 2001-05-15 |
| 6220355 | Downhole apparatus | — | 2001-04-24 |
| 6152224 | Downhole apparatus | — | 2000-11-28 |
| 5372193 | Completion test tool | — | 1994-12-13 |