Drilldown: Patents

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Patents > Filing date: 1910 & Family year: 1900 - 1999 & Number of figures: 20-40

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airplane (15) · stability (8) · Whole (6) · Propellers (6) · frame (5) · None (4) · Construction (4) · HTA (4) · aerodynamics (4) · design (4) · rudder (3) · control (3) · wings (3) · biplane (3)
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