Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6725497 | Device for performing jobs on a surface with a base station | — | 2004-04-27 |
| 6691811 | Safety configuration for an apparatus that can be moved over a surface | Thomas Brüntrup, Joachim Damrath | 2004-02-17 |