Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825638 | Method of and device for recovering heat energy of hot raw gas gererated a coal gasification arrangement of an electric energy generating plant | Karl-Hein Dutz, Gerhard Wilmer, Michael Kuehn | 1989-05-02 |