Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8746111 | Floating wrench assembly for drill rig | Neil M. Baker | 2014-06-10 |
| 7874504 | Chipper feed mechanism and throat opening sensor for use therewith | Bruce Chapman, Mark A. Hartzler | 2011-01-25 |
| 7481386 | Chipper feed mechanism with pulsating down pressure | Mark A. Hartzler | 2009-01-27 |