Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6471776 | Apparatus for applying abrasive substances to continuous paper webs | Walter Muller, Ernst Klas | 2002-10-29 |
| 6432201 | Device for applying a coating substance to a continuous paper web | Ernst Klas, Willi Erkelenz, Heinz Mörtl, Udo Unger | 2002-08-13 |
| 6231670 | Apparatus for impregnating and coating paper | Siegfried Fischer, Willi Erkelenz, Ernst Klas, Udo Unger | 2001-05-15 |