Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4266968 | Process for injecting brown coal into a blast furnace | Heinz G. Daldrup, Friedrich H. Franke, Raymond Limpach | 1981-05-12 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4266968 | Process for injecting brown coal into a blast furnace | Heinz G. Daldrup, Friedrich H. Franke, Raymond Limpach | 1981-05-12 |