DF

Donald L. Ferris

RTX (Raytheon): 2 patents #21 of 514Top 5%
UA US Army: 1 patents #44 of 240Top 20%
📍 Newtown, CT: #2 of 20 inventorsTop 10%
🗺 Connecticut: #67 of 1,954 inventorsTop 4%
Overall (1989): #11,100 of 140,708Top 8%
3
Patents 1989

Issued Patents 1989

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4874292 Apparatus for damping helicopter rotor blade oscillations David G. Matuska 1989-10-17
4804315 Composite helicopter swashplate Francis E. Byrnes, Lawrence Varholak 1989-02-14
4797064 Composite helicopter rotor hub Francis E. Byrnes 1989-01-10