Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636969 | Torque tube/spar assembly for variable diameter helicopter rotors | David G. Matuska, Edward W. Gronenthal | 1997-06-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636969 | Torque tube/spar assembly for variable diameter helicopter rotors | David G. Matuska, Edward W. Gronenthal | 1997-06-10 |