Drilldown: Patents

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Patents > Filing date: 1800 - 1899 & Number of text pages: 7-20000000 & Number of diagram pages: 3-6000000

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navigation (11) · LTA (9) · propulsion (9) · frame (8) · propeller (7) · rudder (7) · passenger (4) · cargo (4) · flapping (3) · balloon (3) · compartments (3) · stability (3) · heavier-than-air (2) · piloting (2) · instrument (2) · steel (2) · kite (2) · airplane (2) · whole (2) · car (2)
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