Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690474 | Optimized composite flexbeam for helicopter tail rotors | Francis D. Federici, David N. Schmaling | 1997-11-25 |
| 5601408 | Axisymmetric elastomeric bearing assembly for helicopter rotors | David H. Hunter, Douglas E. Tritsch | 1997-02-11 |