Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4625372 | Apparatus for the manufacture of biaxially stretched flat film | Walter Hufnagel, Freidrich von und zu Aufsess, Rotger Armsen | 1986-12-02 |
| 4261944 | Method for the manufacture of biaxially stretched polyolefin film | Walter Hufnagel, Friedrich F. von und zu Aufsess, Rotger Armsen | 1981-04-14 |