Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4683962 | Spinner for use in connecting pipe joints | — | 1987-08-04 |
| 4630688 | Power spinner for rotating a kelly joint | Clarence W. Sullivan | 1986-12-23 |
| 4442736 | Power pipe tong rotary plunger inserter | Terry D. Timmerman | 1984-04-17 |
| 4433448 | Power pipe thread cleaner | — | 1984-02-28 |