Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5820344 | Contoured flexure strap for helicopter rotor system | Brian K. Hamilton, Stephen L. Guymon, Murray J. Hines | 1998-10-13 |
| 5621967 | Method of making a leading edge weight retention assembly for a helicopter rotor | Michael C. Frengley | 1997-04-22 |
| 5462409 | Leading edge weight retention assembly for a helicopter rotor | Michael C. Frengley | 1995-10-31 |