Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5057229 | Apparatus and process for the treatment of cooling circuit water | Dietmar Walter | 1991-10-15 |
| 4699071 | Nitrogen oxide reduction in furnaces | Fritz Vier, Dietrich Wiese | 1987-10-13 |