Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344739 | Hingeless and bearingless multiblade rotor for rotary wing aircraft | Hubert Frommlet | 1982-08-17 |
| 4201515 | Rotor without flapping hinges and without lead-lag hinges | Hermann Sahlstorfer | 1980-05-06 |
| 4182597 | Helicopter rotor head | — | 1980-01-08 |