Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6758124 | Unique phasings and firing sequences for perforating guns | James M. Barker | 2004-07-06 |
| 6748843 | Unique phasings and firing sequences for perforating guns | James M. Barker | 2004-06-15 |