Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7261681 | Method and apparatus for applying additive to a moving, spread-out filter material web | Stephan Wolff, Irene Maurer | 2007-08-28 |
| 7175580 | Wear indicator for a roller | Stephan Wolff, Stephan Peters, Harald Dittombee, Thomas Meins, Volker Fricke +4 more | 2007-02-13 |