Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4807704 | System and method for providing multiple wells from a single wellbore | Frank H. Hsu | 1989-02-28 |
| 4762186 | Medium curvature directional drilling method | David D. Hearn, Frank J. Schuh, John H. Striegler | 1988-08-09 |
| 4714117 | Drainhole well completion | — | 1987-12-22 |