Drilldown: Patents

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Patents > Applicant firm: None & Full specification filed date: 1890 - 1899 & Number of figures: 5-30

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navigation (10) · propulsion (7) · frame (7) · propeller (7) · LTA (7) · balloon (4) · hybrid (3) · airplane (2) · parachute (2) · heavier-than-air (2) · compartments (2) · stability (2) · human-powered (2) · rudder (2) · passenger (2) · airfoil (2) · flapping (2) · wings (2) · gas (2) · rigid (2)
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