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Patents > Year filed: 1917 & Grant date: 1920 & Number of diagram pages: 2-4

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airplane (8) · design (6) · wings (4) · biplane (3) · propellers (3) · frame (3) · control (3) · construction (3) · None (3) · HTA (2) · navigation (2) · lift (2) · hydroaeroplane (2) · aerodynamics (2) · steering (2) · blades (2)
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