Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4354899 | Device for concentration and possible purification of mineral acids, particularly sulphuric acid | Hans Broberg, Lars Douren | 1982-10-19 |
| 4269655 | Device for concentration of mineral acids, particularly sulphuric acid | Hans Broberg, Lars Douren | 1981-05-26 |