Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11375870 | Wet cleaning device having a cleaning roller which can be rotated about a roller axis | Pia Hahn, Michael BLUM, Jochen Jentsch | 2022-07-05 |
| 10820771 | Cleaning roller | Michael BLUM | 2020-11-03 |