Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7617841 | Pressure-dependent check valve and hydraulic system equipped therewith | Andreas Hilgert | 2009-11-17 |
| 7219494 | Hydraulic system comprising pressure-controlled damping means | — | 2007-05-22 |
| 7017610 | Damper for hydraulic systems | Ralph Peter Merkel, Andreas Hilgert | 2006-03-28 |