Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4960370 | Internal axis rotary piston machine | Frank Obrist, Felix Wankel, by Gerhard Renz, executor, by Thomas Burkhardt, executor | 1990-10-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4960370 | Internal axis rotary piston machine | Frank Obrist, Felix Wankel, by Gerhard Renz, executor, by Thomas Burkhardt, executor | 1990-10-02 |