Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5628903 | Apparatus for the removal of clarified waste water from circular tanks | — | 1997-05-13 |
| 5591348 | Device for the central feeding of tanks such as circular grit traps, grit classifiers or settling tanks of circular construction | Anton Felder | 1997-01-07 |
| 5552050 | Device for the removal of clarified waste water from rectangular basins | — | 1996-09-03 |
| 5470489 | Method and inlet device for charging shallow grit chambers or settling tanks | Anton Felder | 1995-11-28 |
| 5423986 | Apparatus for the removal of clarified waste water from circular tanks | — | 1995-06-13 |
| 5422017 | Apparatus for central charging of circular tanks with sewage water | Anton Felder | 1995-06-06 |