Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8162079 | Impact excavation system and method with injection system | Nathan J. Harder, Harry B. Curlett, Paul O. Padgett | 2012-04-24 |
| 7793741 | Impact excavation system and method with injection system | Nathan J. Harder, Harry B. Curlett, Paul O. Padgett | 2010-09-14 |
| 7757786 | Impact excavation system and method with injection system | Nathan J. Harder, Harry B. Curlett, Paul O. Padgett | 2010-07-20 |