Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6749147 | Friction winding shaft for reversible rotation | — | 2004-06-15 |
| 5451010 | Friction winding shaft | — | 1995-09-19 |
| 4540622 | Flexible, transparent pane for use as a window | Hans-Georg Brunion, Christian Hiemenz, Helmer Radisch | 1985-09-10 |
| 4232080 | Safety window comprising self-healing polymeric layer | Roger Orain, Hans Ohlenforst, Rudolf Pelzer | 1980-11-04 |