Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884787 | Refractory, ceramic, shaped member | Karl-Heinz Hofer, Jean-Louis Retrayt, Bernd Kull | 1989-12-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884787 | Refractory, ceramic, shaped member | Karl-Heinz Hofer, Jean-Louis Retrayt, Bernd Kull | 1989-12-05 |