Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5549383 | Screw-type extrusion machine with heating elements | Gerhard Weihrich, Hans Wobbe | 1996-08-27 |
| 5297864 | Degassing means for a twin screw extruder for plastic materials | Wolfgang Woerz | 1994-03-29 |
| 4754539 | Method and extractor device for separating worm elements of an extruder from a worm shaft | Gerhard Pfaff, Wolfgang Worz | 1988-07-05 |