Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9856756 | Working medium mixture for steam engines | Michael Hoetger | 2018-01-02 |
| 8307651 | Arrangement for exhaust gas heat utilization | Michael Hoetger, Jurgen Berger, Stephan Bartosch | 2012-11-13 |