Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5896890 | Pilot-operated servo-valve | Bernd Lanfermann, Karl Tratberger, Karl-Heinz Post | 1999-04-27 |
| 5873561 | Two-port cartridge seat valve | Bernd Lanfermann, Karl Tratberger, Karl-Heinz Post | 1999-02-23 |
| 5447174 | Pilot stage for pressure control valves | Bernd Lanfermann, Karl Tratberger, Karl-Heinz Post | 1995-09-05 |
| 5445188 | Pilot operated servo valve | Bernd Lanfermann, Karl Tratberger, Karl-Heinz Post | 1995-08-29 |