Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793930 | Process for waste water purification employing the activated sludge process | Carl-Johannes Soeder, Heinrich Keusen, Erich Zanders | 1988-12-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793930 | Process for waste water purification employing the activated sludge process | Carl-Johannes Soeder, Heinrich Keusen, Erich Zanders | 1988-12-27 |