Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8870554 | Pump with wear sleeve | — | 2014-10-28 |
| 7467658 | Down hole drilling fluid heating apparatus and method | David Jones | 2008-12-23 |
| 7287603 | Combined casing expansion/casing while drilling method and apparatus | Richard Thomas Hay, Jerry Lavelle Keen, Jr., Charles M. Reid | 2007-10-30 |
| 7234544 | Drill tool shaft-to-housing locking device | — | 2007-06-26 |
| 7225875 | Multi-layered wellbore junction | David Joe Steele, John M. Kolker, Hendrik M. Stoltz | 2007-06-05 |
| 6769499 | Drilling direction control device | Edward James Cargill, Evan Lloyd Davies, Gary L. Donison, Terrance Dean Maxwell, Boguslaw Wiecek | 2004-08-03 |