Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7240904 | Secondary sealing element | Peter Droscher, Klaus Lang, Günther Lederer, Josef Nosowicz, Andreas Schrufer +1 more | 2007-07-10 |
| 6517078 | Face seal device with additional mass for high rotational speeds | Andreas Schruefer, Werner Wolf, Guenther Lederer, Peter Droescher, Josef Nosowicz | 2003-02-11 |