Drilldown: Patents

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Patents > Year filed: 1918 & National tech categories : FR 6.2 or FR 6.4 & Number of text pages: 1-2

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airplane (8) · construction (8) · design (6) · propellers (5) · wings (5) · fuselage (3) · frame (3) · ribs (3) · aerodynamics (2) · subsystem (2) · stability (2) · propulsion (2)
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