Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592679 | Pneumatic conveying process and apparatus | Bernd Federhen, Gerhard Muller-Spath | 1986-06-03 |
| 4570552 | Process and apparatus for delivering carbon material to a furnace | Hans-Gunther Rachner | 1986-02-18 |