Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6136462 | High temperature fuel cells with heating of the reaction gas | Gerhard Filip | 2000-10-24 |
| 4885442 | Contact element | — | 1989-12-05 |
| 4521654 | High voltage disconnect switch employing pre-contact pieces | Wolfgang Eberhardt, Dietrich Hoffmann, Erwin Rohde | 1985-06-04 |
| 4393290 | Puffer-type gas blast switch | Gunter Mittelbach, Gunter Horstmann, Werner Heiss, Dietrich Hoffmann, Gunter Siebrecht +1 more | 1983-07-12 |
| 4390764 | Puffer-type gas blast switch | Hans-Georg Augustin, Dietrich Hoffmann | 1983-06-28 |