Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6934973 | Dispensing device for dispensing an active-substance fluid into the flushing liquid in a toilet bowl | Detlef Lehmann, Hans-Georg Muehlhausen, Ronald Menke, Frank Pessel, Ralph Butter-Jentsch | 2005-08-30 |