Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6779776 | Intrinsically safe electrically magnetically operated hydraulic valve | Franz-Heinrich Suilmann, Michael Dettmers, Hans-Udo Rheiner | 2004-08-24 |
| 6774537 | Warning tone transmitter | Jorg Wagner, Emmanuel Charruau, Helmut Hermann | 2004-08-10 |