Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6508932 | Filter with valve having a hydrophobic coating | Heinz Mueller | 2003-01-21 |
| 5741421 | Filter device | Hans Erdmannsdoerfer, Manfred Wagner | 1998-04-21 |
| 5736040 | Filter assembly including a reinforced radial seal | Rolf Duerrstein, Hans Erdmannsdoerfer, Bruno M. Sommer | 1998-04-07 |