Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4552231 | Rotating pilot core bit for use in highly fractured formations | Clifford R. Pay | 1985-11-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4552231 | Rotating pilot core bit for use in highly fractured formations | Clifford R. Pay | 1985-11-12 |