Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10390674 | Method for cleaning a floor surface and floor cleaning device | Juergen Walz, Christian Hofner, Barbara Pfister | 2019-08-27 |
| 10338595 | Method for treating a floor surface and floor treating apparatus | Heiko Hoennige, Christian Hofner | 2019-07-02 |