Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5137425 | Propfan engine having two oppositely rotating fan rotors | Alois Rohra, Klaus Britz | 1992-08-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5137425 | Propfan engine having two oppositely rotating fan rotors | Alois Rohra, Klaus Britz | 1992-08-11 |