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Patents > Grant date: September 1920 & Number of text pages: 2-4

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Airplane (9) · None (6) · biplane (6) · construction (5) · design (5) · propellers (4) · frame (4) · stability (3) · control (3) · aerodynamics (2) · LTA (2) · landing (2) · Fuselage (2) · Subsystem (2) · Tragdeck (2)
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