Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10760354 | Collar with stepped retaining ring groove | Greg L. Slaughter, Jr. | 2020-09-01 |
| 10487595 | Collar with stepped retaining ring groove | Greg L. Slaughter, Jr. | 2019-11-26 |
| D851688 | Horizontal directional drill | Clinton T. Cosgrove, Cole J. Rush, Pete Ramos, Seth T. Matthesen, David Thimm +1 more | 2019-06-18 |
| 5553676 | Reversible expander | Kelvin P. Self | 1996-09-10 |
| 5327636 | Reversible impact-operated boring tool | — | 1994-07-12 |
| 5172771 | Reversible impact-operated boring tool | — | 1992-12-22 |
| 4907658 | Percussive mole boring device with electronic transmitter | Gerald A. Stangl, Douglas W. Lee | 1990-03-13 |
| 4872516 | Air driven impact operated ground piercing tool | Ronald L. MacFarlane | 1989-10-10 |