Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7225500 | Sensor apparatus and self-propelled floor cleaning appliance having a sensor apparatus | Ralph Diehl, Joachim Keppler, Jakob Janzen | 2007-06-05 |
| 7053578 | Floor treatment system | Ralph Diehl, Joachim Keppler, Roger Skoumal | 2006-05-30 |