Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7419738 | Module for a fuel cell arrangement comprising plates joined by a seal | Karl-Heinz Maus, Hans-Joachim vom Stein | 2008-09-02 |
| 6877719 | Valve shaft seal | — | 2005-04-12 |
| 4502697 | Compact integrated face seal unit | — | 1985-03-05 |