Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6651743 | Slim hole stage cementer and method | — | 2003-11-25 |
| 6571876 | Fill up tool and mud saver for top drives | — | 2003-06-03 |
| 6547007 | PDF valve | Henry E. Rogers | 2003-04-15 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6651743 | Slim hole stage cementer and method | — | 2003-11-25 |
| 6571876 | Fill up tool and mud saver for top drives | — | 2003-06-03 |
| 6547007 | PDF valve | Henry E. Rogers | 2003-04-15 |