Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368459 | Device for preparing and feeding a monolithic ceramic mass into a metallurgical melting vessel | Alexander Retschnig | 1994-11-29 |
| 5333843 | Device for installing and removing gas purging plugs for metallurgical vessels | Leopold Kneis | 1994-08-02 |