Drilldown: Patents

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Patents > Office : DE or JP or NL or US & Filing date: 1800 - 1899 & First filing: No & Number of text pages: 3

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LTA (13) · propulsion (11) · frame (10) · balloon (6) · propeller (6) · flapping (5) · navigation (4) · car (4) · parachute (3) · human-powered (3) · stability (3) · wheels (3) · cargo (2) · rudder (2) · landing (2) · design (2)
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