Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9085359 | Rotor blade tip planform | — | 2015-07-21 |
| 8210818 | Helicopter antitorque tail rotor blade | Alessandro Scandroglio | 2012-07-03 |
| 8056851 | Helicopter antitorque tail rotor | Alessandro Scandroglio | 2011-11-15 |
| 5992793 | Aerofoil | Frederick J. Perry, Robert John Harrison | 1999-11-30 |
| 5927948 | Propeller | Frederick J. Perry, Robert John Harrison | 1999-07-27 |
| 5750891 | Method and apparatus for determining the airspeed of rotary wing aircraft | — | 1998-05-12 |
| 5492448 | Rotary blades | Frederick J. Perry | 1996-02-20 |
| 5205715 | Helicopter rotor blades | Frederick J. Perry, Nicholas C. G. Isaacs | 1993-04-27 |
| 5199851 | Helicopter rotor blades | Frederick J. Perry | 1993-04-06 |
| 5174721 | Helicopter rotor blades | — | 1992-12-29 |