Drilldown: Patents

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Patents > Filing date: 1913 & Number of figures: 16-40

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stability (13) · Airplane (12) · automatic stability (5) · propellers (5) · Propulsion (5) · frame (5) · military (4) · Wings (4) · navigation (3) · lift (3) · projectile (3) · Flapping (3) · design (3) · LTA (2) · None (2) · sustentation (2) · compartments (2) · ballonet (2) · ascension (2) · equilibrium (2)
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