Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857281 | Pauling boiler and process for the concentration of sulphuric acid | Heiko Beckhaus, Peter Klein | 1989-08-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857281 | Pauling boiler and process for the concentration of sulphuric acid | Heiko Beckhaus, Peter Klein | 1989-08-15 |