Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6715601 | Method for control of the chain drive mechanisms of underground working machines, especially chain scraper conveyors, and a chain scraper conveyor | Dirk Abel, Arno Breimhorst, Erwin Haese, Gerhard Merten, Peter Herkenrath +2 more | 2004-04-06 |
| 6672674 | Longwall mining with blasting | Harry Martin | 2004-01-06 |