Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7387188 | Sound absorber | Uwe Keller, Hans-Joachim Lowe, Joachim Von Der Hagen, Helmut Stonner | 2008-06-17 |
| 7303370 | Fluid flow engine and method of producing a guiding grid | Dirk Frankenstein, Ralf Boening | 2007-12-04 |
| 7189058 | Fluid flow engine and support ring for it | Hans-Peter Schmalzl, Ralf Boening | 2007-03-13 |