Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4401564 | Device for affixing a filter mesh to the drum of a rotary drum filter | Wolfgang Epper, Lothar Michalski | 1983-08-30 |
| 4211653 | Method for vacuum filtration | Eberhard Koppe, Wolfgang Epper | 1980-07-08 |