Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333917 | Process of producing sulfuric acid | Karl-Heinz Dorr, Helmut Diekmann, Ulrich Sander, Michael Tacke, Waldemar Weber | 1982-06-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333917 | Process of producing sulfuric acid | Karl-Heinz Dorr, Helmut Diekmann, Ulrich Sander, Michael Tacke, Waldemar Weber | 1982-06-08 |