Drilldown: Patents

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Patents > Year filed: 1893 & Office : BE or DE or SE

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LTA (13) · frame (7) · propeller (7) · car (7) · propulsion (6) · balloon (6) · navigation (5) · None (4) · stability (3) · control (3) · rudder (2) · parachute (2) · gas (2) · kite (2) · airship (2) · airfoil (2) · ascension (2)
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