Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9718536 | Counter-rotating open-rotor (CROR) | David R. Danielson, Paul A. Carvalho, Robert H. Perkinson | 2017-08-01 |
| 8118562 | Sacrificial blade tip | David V. Arel | 2012-02-21 |
| 7976279 | Blade pitch actuation mechanism | Paul A. Carvalho | 2011-07-12 |
| 7296969 | Propeller pitch change system | Paul A. Carvalho | 2007-11-20 |