Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813747 | Rack assembly for advancing a winning machine | Hugo Klimeck, Gerhard Wilken | 1989-03-21 |
| 4453774 | Driving arrangement for longwall mining machines | — | 1984-06-12 |
| 4451091 | Track for a longwall mining machine | Herbert Schupphaus | 1984-05-29 |
| 4307915 | Gear rack for longwall mining machine | — | 1981-12-29 |