Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9708855 | Drilling machine power pack which includes a clutch | Timothy W. Ledbetter | 2017-07-18 |
| 8646549 | Drilling machine power pack which includes a clutch | Timothy W. Ledbetter | 2014-02-11 |
| 8413728 | Break-out assembly for a drilling machine | Timothy W. Ledbetter, Steven B. Tweedie, James M. Benson, Maureen A. Bohac | 2013-04-09 |