Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4246212 | Method and apparatus for optimizing the output of a blown film extruder plant by means of a process computer | Hartmut Upmeier, Helmut Helbig, Werner Zimmermann, Gerhard Winkler | 1981-01-20 |