Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5161857 | Teleoperated control system for underground room and pillar mining | William D. Mayercheck, Albert L. Brautigam, Brian Mueller | 1992-11-10 |
| 5121365 | Cutting sound enhancement system for mining machines | Michael C. Leigh | 1992-06-09 |