Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4964785 | Pump assembly | Siegfried Schoenwald, Hans-Georg Trojahn | 1990-10-23 |
| 4914333 | Electromotor belt drive adjustment assembly | — | 1990-04-03 |
| 4247260 | Pressure regulated water supply system | Siegfried Schonwald | 1981-01-27 |
| 4194527 | Pressure limiting valve | Siegfried Schonwald, Hans-Georg Trojahn | 1980-03-25 |
| 4194798 | Side channel compressor with at least one bearing arranged at the housing cover of the side channel compressor | Siegfried Schonwald, Rudolf Schoning, Gert Hecht | 1980-03-25 |