Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4432423 | Apparatus for extended straight line drilling from a curved borehole | William C. Lyons | 1984-02-21 |
| 4333539 | Method for extended straight line drilling from a curved borehole | William C. Lyons | 1982-06-08 |