Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4464318 | Method of controlling the film thickness at a blown film installation | Hartmut Upmeier, Gerhard Winkler | 1984-08-07 |
| 4351785 | Method of controlling the film thickness at a blown film extruder installation | Hartmut Upmeier, Gerhard Winkler | 1982-09-28 |
| 4339403 | Method of controlling the film thickness at a blown film extruder installation | Hartmut Upmeier, Gerhard Winkler | 1982-07-13 |
| 4339404 | Method of controlling the film thickness at a blown film installation | Hartmut Upmeier, Gerhard Winkler | 1982-07-13 |