Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648614 | Integrated circuit and seal | Rainer Martsfeld, Thomas Kuhlmann, Hanno Wentzler | 1997-07-15 |
| 5645283 | Radial shaft seal having dust lip with notches | Rolf Drucktenhengst | 1997-07-08 |
| 5642889 | Sealing ring | Franz Pauler, Ulrich Dahlhaus | 1997-07-01 |