Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5227048 | Backwashable filter device having means to add additional fluids to filtrate backwash fluid | Rudi Hermann, Rudi Siller | 1993-07-13 |
| 4719010 | Apparatus for rinsing a fixed bed ion exchanger | — | 1988-01-12 |