Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4614903 | Windshield wiper speed control arrangement | Walter Bierent, Gunther Gille, Horst Goertler, Hans Prohaska, Horst Rachner | 1986-09-30 |
| 4580203 | Illuminating device | Herbert Teply | 1986-04-01 |
| 4329631 | Wiper installation for motor vehicles | Horst Goertler, Karl-Heinz Liedtke, Hans Prohaska, Horst Rachner | 1982-05-11 |