Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4679983 | Water pump for window washer unit | Erwin Pietryk | 1987-07-14 |
| 4533169 | Spare wheel arrangement in motor cars | Harry Pietsch | 1985-08-06 |
| 4439887 | Wiper arm with washer nozzle for motor vehicle windows | Peter Fischer, Erwin Pietryk | 1984-04-03 |
| 4428533 | Windshield wiper shaft bushing assembly with washer jet | Erwin Pietryk, Peter Fischer | 1984-01-31 |