Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7647977 | Borehole liner | David R. Hall, Joe Fox | 2010-01-19 |
| 7455117 | Downhole winding tool | David R. Hall | 2008-11-25 |
| 7380841 | High pressure connection | David R. Hall | 2008-06-03 |
| 7270199 | Cutting element with a non-shear stress relieving substrate interface | David R. Hall | 2007-09-18 |