Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4992028 | Liquid ring pump | Robert Seufert | 1991-02-12 |
| 4964785 | Pump assembly | Eberhard Breyer, Hans-Georg Trojahn | 1990-10-23 |
| 4943208 | Multi-stage lateral channel compressor | — | 1990-07-24 |
| 4907945 | Side-channel compressor | — | 1990-03-13 |
| 4836241 | Valve for the controlling of a pressure differential | — | 1989-06-06 |