Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5223345 | Extruder housing for a double-worm extruder and method of making same | Hartmut Kaiser | 1993-06-29 |
| 5116135 | Extruder housing for a double-worm extruder and method of making same | Hartmut Kaiser | 1992-05-26 |