Issued Patents 1997
Showing 1–2 of 2 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, Gilles Arnaud | 1997-06-03 |
| 5619797 | Flow-straightener vane for counter-torque device with ducted rotor and ducted flow-straightening stator, for helicopter | Henri F. Barquet | 1997-04-15 |