Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5642982 | Retraction/extension mechanism for variable diameter rotors | David G. Matuska | 1997-07-01 |
| 5636969 | Torque tube/spar assembly for variable diameter helicopter rotors | David G. Matuska, W. Donald Jepson | 1997-06-10 |
| 5620304 | Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise | David G. Matsuka, Robert C. Moffitt | 1997-04-15 |