Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11052342 | Pocket filter element | Maik Sieh, Hans Wiegand | 2021-07-06 |
| 6488731 | Pleated filter made of a multi-layer filter medium | Wolfram Schultheiss, Jörg Stöckler | 2002-12-03 |