Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7988160 | Cleaning cart | Falk Lindner, Andreas Eisenhut, Tortsen Gratzki, Dietmar Schaule | 2011-08-02 |
| 7917989 | Mop system, wringer device and mop | Andreas Eisenhut, Torsten Gratzki | 2011-04-05 |
| D630489 | Electronic lock | Torsten Gratzki, Helmut Guth, Diethard Geiger | 2011-01-11 |