Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4944497 | Flushing block | Bernd Grabner, Lorenz Dotsch, Josef Knauder | 1990-07-31 |
| 4670958 | Extracting device for a gas-purge brick | — | 1987-06-09 |
| 4616809 | Gas bubble brick for metallurgical vessels | — | 1986-10-14 |
| 4568066 | Apparatus for introducing gas to molten metal | Bernd Grabner | 1986-02-04 |
| 4560149 | Gas bubble brick for metallurgical vessels | — | 1985-12-24 |