Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6220288 | Electrohydraulic control device | Hartmut Sandau, Werner Schumacher | 2001-04-24 |
| 5839345 | Hydraulic control in monoblock structure for lifting and lowering a load with at least two electromagnetically actuatable proportional distributing valve elements | Hartmut Sandau, Werner Schumacher, Rainer Trucksess | 1998-11-24 |
| 5290007 | Control device for volume stream of hydraulic working medium | Hartmut Sandau | 1994-03-01 |