Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823945 | Pressure compensating apparatus and method for downhole tools | Avel Z. Ortiz | 2004-11-30 |
| 6776239 | Tubing conveyed fracturing tool and method | Stephen D. Hill, Randolph J. Sheffield, Howard L. McGill, James M. Costley | 2004-08-17 |