Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5634611 | Counter-torque device with rotor and flow straightening stator, both of which are ducted, and inclined flow-straightening vanes | Henri-James Marze, Vincent J. L. Routhieau, Remy-Elian Arnaud | 1997-06-03 |