Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6681801 | Pumping station with efficiency increasing and backflow preventing structure | Hans-Dieter Knoepfel, Gerhard Meyer, Wolfgang Roesler, Hartmut Rosenberger | 2004-01-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6681801 | Pumping station with efficiency increasing and backflow preventing structure | Hans-Dieter Knoepfel, Gerhard Meyer, Wolfgang Roesler, Hartmut Rosenberger | 2004-01-27 |