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Patents > Filing date: 1917 & Grant date: 1920 & Number of diagram pages: 2-20

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airplane (8) · design (7) · None (5) · wings (5) · construction (4) · biplane (3) · propellers (3) · control (3) · aerodynamics (3) · frame (3) · HTA (2) · lift (2) · navigation (2) · piloting (2) · hydroaeroplane (2) · blades (2) · steering (2) · stability (2)
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