Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4644557 | Process for the production of calcium carbide and a shaft furnace for carrying out the process | Joachim Ebeling, Peter Friedrich, Herbert Jekat, Walter Lugscheider, Ernst Riegler +2 more | 1987-02-17 |