Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6135215 | Tool string apparatus for lateral borehole formation | — | 2000-10-24 |
| 5085283 | Method and tool string for curving a vertical borehole horizontally | Ed O. Seabourn | 1992-02-04 |