Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5494266 | Discharge assembly for tundish | Laurenz Keisers | 1996-02-27 |
| 4781238 | Refractory channel connection apparatus in a metallurgical vessel | Laurenz Keisers, Johannes Steins | 1988-11-01 |