Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11027834 | Inboard centrifugal force bearing attachment | Andrew Maresh, Troy Cyril Schank, Chyausong Tzeng, John Richard McCullough | 2021-06-08 |
| 10981647 | Rotor span-balance pocket | Robert Self, Nathan P. Green, John Richard McCullough, Russell Cole, Paul Sherrill | 2021-04-20 |