Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5714187 | Screw extruder and process for controlling the quality of feedstuff products | Willi Wetzel, Stefan Rutishauser | 1998-02-03 |
| 5271728 | Apparatus with detachable teeth for pressing out raw materials | Werner Haelg | 1993-12-21 |