Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645772 | Refractory ceramic mass for lining the bottoms of electric arc furnaces and process for their repair | Franz-Adolf Petio | 1997-07-08 |
| 5646079 | Refractory ceramic mass and its use | — | 1997-07-08 |