Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6257548 | Valve construction | Ralf Hiddessen, Jan-Peter Ossenbrugge, Frank Rieck | 2001-07-10 |
| 6233814 | Method of producing an electromagnetic coil | Robert Bast, Frank Rieck, Klaus-D. Wustefeld, Werner Leuschner, Heinrich Rheinlander | 2001-05-22 |
| 6047945 | Electromagnetic valve construction | Jan-Peter Obenbrugge, Ralf Hiddessen, Franz Rieck | 2000-04-11 |