Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662954 | Cylindrical filter cartridge with support tube | Renate Gottwald-Grill | 2003-12-16 |
| 6599342 | Filter cartridge | Heinz Andress, Bertram Uebelhoer, Gerhard Mayer, Werner Blossey | 2003-07-29 |
| 6511101 | Snap-on central support tube for a filter element | Bruno M. Sommer | 2003-01-28 |