Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249778 | Gas stir plug device with visual wear indicator | Wolfgang Steichert | 1993-10-05 |
| 4257542 | Slide gate for containers holding liquid metal melt | Walther Aller, Eckehard Eisermann, Gerd Konig | 1981-03-24 |