Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6481802 | Control system for longwall face alignment | — | 2002-11-19 |
| 6375154 | Seat and holding valve | Rolf Beils | 2002-04-23 |
| 6361119 | Mining control system for adjusting the advance of mining tools | — | 2002-03-26 |