Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174511 | Apparatus for feeding material for a roll mill | Josef Huber, Hugo Hegelbach | 1992-12-29 |
| 4905917 | Roll mill and method for feeding particulate material | Wilhelm Fetzer | 1990-03-06 |
| 4193555 | Roll mill for feeding material to the roll gap | — | 1980-03-18 |