Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816979 | Circuit for regulating the high-voltage supply of an electrostatic filter | Karl-Heinz Hagele, Hartmann Rupp | 1989-03-28 |
| 4805105 | Method and system for electrically controlling braking of a vehicle | Eberhard Weiss, Manfred Stahl, Erich Jung, Franz Maurer | 1989-02-14 |