Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5641397 | Device for separating inorganic material polluted by organic material from a fluid | — | 1997-06-24 |
| 5464542 | Method and device for filtering and backwashing solid particles out of liquids | Rudolf Bogner, Christian Frommann | 1995-11-07 |