Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4318200 | Windshield wiper | Wilhelm Dorr, Alfred Kohler, Oldrich Krizek, Hans Prohaska | 1982-03-09 |
| 4309790 | Windshield wiper yoke | Georg Hesch, Hans Huber, Helmut Markert, Christian Roth | 1982-01-12 |
| 4261074 | Windshield wiper | Wilhelm Dorr, Alfred Kohler, Oldrich Krizek, Hans Prohaska | 1981-04-14 |