Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9500558 | Method and device for measuring the light gap tightness of piston rings | Markus Kellner, Jens Picard | 2016-11-22 |
| 8857820 | Piston ring | Christian Herbst-Dederichs, Peter Esser, Ralf Lammers | 2014-10-14 |