Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5592994 | Propulsion seal for wire line core drilling apparatus | Amos J. Watkins | 1997-01-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5592994 | Propulsion seal for wire line core drilling apparatus | Amos J. Watkins | 1997-01-14 |