Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4388195 | Process and apparatus for the chemical-mechanical treatment and purification of ground waters, surface waters and effluents | Gunter von Hagel, Gerhard Werner | 1983-06-14 |
| 4290898 | Method and apparatus for mechanically and chemically treating liquids | Gunter von Hagel | 1981-09-22 |
| 4209395 | Process for slow softening water | Ferdinand Klegraf | 1980-06-24 |