Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5158341 | Method of steering a mining machine | Bruce N. Roth, John S. Wykes | 1992-10-27 |
| 5116103 | Method of steering a mining machine | Bruce N. Roth, John S. Wykes | 1992-05-26 |
| 5106162 | Method of steering a mining machine | Bruce N. Roth, John S. Wykes | 1992-04-21 |
| 4976495 | Method and apparatus for steering a mining machine cutter | Timothy S. Gammons | 1990-12-11 |