Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351785 | Method of controlling the film thickness at a blown film extruder installation | Hartmut Upmeier, Gerd Klinge | 1982-09-28 |
| 4339403 | Method of controlling the film thickness at a blown film extruder installation | Hartmut Upmeier, Gerd Klinge | 1982-07-13 |
| 4339404 | Method of controlling the film thickness at a blown film installation | Hartmut Upmeier, Gerd Klinge | 1982-07-13 |