Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5338112 | Process and apparatus for two stage treatment of plastic materials | Hellmut Boden, Hans Wobbe | 1994-08-16 |
| 5318358 | Screw kneader for plastic material having a controlling mixing section | Hans Wobbe | 1994-06-07 |