Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7976614 | Method for cleaning the filters of a vacuum cleaner and vacuum cleaner for carrying out the method | Thorsten Langen | 2011-07-12 |
| 7861367 | Vacuum cleaner | Thorsten Langen, Martin Wegner | 2011-01-04 |