Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6564866 | Method and apparatus for a tubing conveyed perforating guns fire identification system using enhanced marker material | John H. Clark | 2003-05-20 |
| 6538576 | Self-contained downhole sensor and method of placing and interrogating same | Roger L. Schultz, Benjamin Stewart, Nadir Mahjoub | 2003-03-25 |