Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9216369 | Filter device | Bruno Hegnauer | 2015-12-22 |
| 9004289 | Filter device | Bruno Hegnauer | 2015-04-14 |
| 5630938 | Evertable drum centrifuge filter | Johannes Feller, Bruno Hegnauer | 1997-05-20 |