Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6789681 | Screen for fiber suspensions and method for the manufacture thereof | Erich Czerwoniak, Erwin Mayer, Jochen Gustav Pfeffer | 2004-09-14 |
| 6131743 | Screen basket for fiber suspensions and method for the production thereof | Erich Czerwoniak, Jochen Gustav Pfeffer | 2000-10-17 |
| 5601192 | Pressure sorter for fiber suspensions | Erich Czerwoniak | 1997-02-11 |