Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883594 | Flooded biological film reactor for water treatment, with gas charging via a membrane | Hans-Juergen Braeutigam | 1989-11-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883594 | Flooded biological film reactor for water treatment, with gas charging via a membrane | Hans-Juergen Braeutigam | 1989-11-28 |