Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799546 | Drill pipe conveyed logging system | Donald E. Hensley, E. Edward Rankin, Martin L. Tomek | 1989-01-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799546 | Drill pipe conveyed logging system | Donald E. Hensley, E. Edward Rankin, Martin L. Tomek | 1989-01-24 |