Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11312932 | Method and device for producing biogas | Marcel Spahr | 2022-04-26 |
| 4392952 | Bar screen with screen cleaner for waste water treatment installations | Hubert Jung | 1983-07-12 |
| 4318670 | Screw pump for conveying waste water and the like | Gunter Nudinger | 1982-03-09 |