Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6301986 | Gear arrangement, especially for a double screw extruder | — | 2001-10-16 |
| 6178851 | Gear for twin-screw extruder | Marion Aumueller, Guido Koch, Lothar Thiel | 2001-01-30 |