Issued Patents All Time
Showing 51–56 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5752806 | Method of reducing noise from the flow of gaseous media in a single rotation machine using a bypass for compression control | Michael Frey | 1998-05-19 |
| 5694784 | Vehicle air conditioning system | Michael Frey | 1997-12-09 |
| 5255432 | Method for manufacturing a seal between machine parts | Peter Kuhn, Michael Frey | 1993-10-26 |
| 5178529 | Seal formed of plastic layer having outwardly open depressions | Peter Kuhn, Michael Frey | 1993-01-12 |
| 5147194 | Rotary piston machine with a protuberance in the cylinder wall | Peter Kuhn | 1992-09-15 |
| 4960370 | Internal axis rotary piston machine | Felix Wankel, by Gerhard Renz, executor, by Fried Meysen, executor, by Thomas Burkhardt, executor | 1990-10-02 |