Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7330807 | Method, computer program product and computer system for the automatic production of a filter unit | Ulrich Koehler, Jochen Von Der Hardt | 2008-02-12 |
| 6372133 | Multiple filter housing with filter element locking device | Jochen Von Der Hardt, Maik Jornitz | 2002-04-16 |
| 4404102 | Filtration apparatus for flat filter plates cut to size | Gunter Pradel | 1983-09-13 |