Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5358381 | Yoke for helicopter rotor systems | Cecil E. Covington, Timothy Kent Ledbetter, Ernest Powell, Ajay Sehgal, Patrick R. Tisdale | 1994-10-25 |
| 5110259 | Pitch change bearing system | — | 1992-05-05 |
| 5074753 | Rotor blade | Cecil E. Covington, Ernst C. Schellhase | 1991-12-24 |
| 5059094 | Rotor redundant force retention system for VTOL and VSTOL aircraft | Martin H. Lufkin, William D. Neathery | 1991-10-22 |
| 4986735 | Pitch change bearing system | — | 1991-01-22 |