Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7878779 | Vane pump with housing end wall having an annular groove and a pressure groove that communicate via a curved connecting groove | Achim Koehler, Christian Langenbach, Joerg Wuerz | 2011-02-01 |