Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4396212 | Rotary fluid coupling | — | 1983-08-02 |
| 4368925 | Cutter drum assembly for a longwall mining machine | — | 1983-01-18 |
| 4212497 | Liquid discharge apparatus for a shearing-loader type mining machine | Karl-Heinz Borowski | 1980-07-15 |