Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7533732 | Dual entry apparatus for a subterranean borehole | — | 2009-05-19 | $42,201,000 |
| 7478673 | Frac head including a mixing chamber | — | 2009-01-20 | |
| 6095243 | Washout arrangement for a well | Bernard Herman Van Bilderbeek | 2000-08-01 | |
| 5979572 | Flow control tool | Mark Stanley Davy | 1999-11-09 |