Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6695911 | Method and installation for production of cement clinker | Hubert Ramesohl | 2004-02-24 |
| 6691628 | Method and apparatus for thermal processing of powder raw materials | Michael Siegert | 2004-02-17 |