Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668389 | Vacuum toilet | Uwe Steinmetz, Karlheinz Steinmüller, Thomas Dittmar | 2003-12-30 |
| 6394112 | Pipe cleaning nozzle | Uwe Steinmetz, Thomas Dittmar, Karlheinz Steinmueller | 2002-05-28 |