Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881869 | Furnace charging throat construction | Bernhard Henneken, Burno Kammerling, Wolfgang Schroeder, Hans W. Krause | 1989-11-21 |
| 4878655 | Furnace charging throat construction | Bernhard Henneken, Bruno Kammerling, Wolfgang Schröder, Hans W. Krause | 1989-11-07 |
| 4828228 | Apparatus for changing the level of tap runner of a shaft furnace | Bruno Kammerling, Werner Rosker, Wolfgang Kowalski | 1989-05-09 |