Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883111 | Ingot mould for continuous casting | Waldemar Radtke, Karl-Heinz Wyrwas | 1989-11-28 |
| 4819840 | Refractory submerged pouring nozzle | Karl-Ulrich Kohler | 1989-04-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883111 | Ingot mould for continuous casting | Waldemar Radtke, Karl-Heinz Wyrwas | 1989-11-28 |
| 4819840 | Refractory submerged pouring nozzle | Karl-Ulrich Kohler | 1989-04-11 |