Drilldown: Patents

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Patents > Publication date: 1909 & Number of text pages: 4

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Airplane (13) · Design (9) · frame (8) · stability (7) · construction (6) · control (5) · Wings (5) · subsystem (5) · Lift (4) · navigation (4) · Propellers (4) · None (4) · Propulsion (4) · Ascension (4) · Sustentation (4) · airship (3) · LTA (3) · Aerodynamics (3)
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