Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5928807 | Integrated seal for a PEM fuel cell | — | 1999-07-27 |
| 5005979 | Optical position detection | Heinz Sontag, Wolfgang Ludwig, Walter Fritzsch, Wolfgang Eschner, Rainer Hundhausen +1 more | 1991-04-09 |