Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867236 | Compact casing tongs for use on top head drive earth drilling machine | Keith M. Haney | 1989-09-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867236 | Compact casing tongs for use on top head drive earth drilling machine | Keith M. Haney | 1989-09-19 |