Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838934 | Process for a direct reduction of iron oxide containing materials in a rotary kiln | Wolfram Schnabel | 1989-06-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838934 | Process for a direct reduction of iron oxide containing materials in a rotary kiln | Wolfram Schnabel | 1989-06-13 |