Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4577701 | System of drilling deviated wellbores | Thomas B. Dellinger | 1986-03-25 |
| 4431068 | Extended reach drilling method | Thomas B. Dellinger | 1984-02-14 |
| 4384483 | Preventing buckling in drill string | Thomas B. Dellinger, John E. Walraven | 1983-05-24 |
| 4361193 | Method and arrangement for improving cuttings removal and reducing differential pressure sticking of drill strings in wellbores | — | 1982-11-30 |