Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4236886 | Method and apparatus for the production of coaldust | Jakob Ansen, Helmut Duill | 1980-12-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4236886 | Method and apparatus for the production of coaldust | Jakob Ansen, Helmut Duill | 1980-12-02 |