Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6894620 | Method and device for monitoring the service life of a filter | Heinz Reinhardt, Christoph Malig | 2005-05-17 |
| 6428594 | Filter cartridge made of an accordion fold pack folded in a zigzag-shaped manner and method for its manufacture | Dieter Hintenlang | 2002-08-06 |