Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5992793 | Aerofoil | Robert John Harrison, Alan Brocklehurst | 1999-11-30 |
| 5927948 | Propeller | Alan Brocklehurst, Robert John Harrison | 1999-07-27 |
| 5492448 | Rotary blades | Alan Brocklehurst | 1996-02-20 |
| 5246344 | Helicopter rotor blade with improved performance characteristics | — | 1993-09-21 |
| 5205715 | Helicopter rotor blades | Nicholas C. G. Isaacs, Alan Brocklehurst | 1993-04-27 |
| 5199851 | Helicopter rotor blades | Alan Brocklehurst | 1993-04-06 |
| 5100294 | Helicopter rotors | Mark A. Crannage, Robert E. Hansford | 1992-03-31 |
| 4975022 | Helicopter rotor blades | — | 1990-12-04 |
| 4668169 | Helicopter rotor blade | — | 1987-05-26 |
| 4427344 | Helicopter rotor blade | — | 1984-01-24 |