Drilldown: Patents

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Patents > Filing date: 1916 & Supplementary to patent: None & Number of figures: 12-30

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None (6) · stability (6) · Airplane (6) · propellers (5) · design (5) · control (4) · hydroaeroplane (4) · propulsion (3) · marine (3) · HTA (3) · helicopter (3) · frame (3) · wings (3) · aerodynamics (3)
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