Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6896077 | Rotary driven pipe-bursting tool | David R. Payne, Michael Anderson | 2005-05-24 |
| 6761231 | Rotary driven drilling hammer | Matthew Dock, Richard F. Sharp | 2004-07-13 |
| 6311790 | Removable boring head with tapered shank connector | Jerry W. Beckwith | 2001-11-06 |
| 6250404 | Directional boring head | — | 2001-06-26 |