Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9731253 | Standpipe arrangement and fastening for holding and for supplying gas to aerators in a waste water clarifying basin | Alexander Ott | 2017-08-15 |
| 6626425 | Gasification device | — | 2003-09-30 |
| 5676890 | Aeration device | — | 1997-10-14 |
| 4954296 | Gas injection equipment | — | 1990-09-04 |