Drilldown: Patents

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Patents > Office : CH or DE or US & Family year: 1890 - 1899 & Number of figures: 1-2

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LTA (11) · balloon (6) · propulsion (5) · frame (5) · None (4) · propeller (4) · navigation (4) · safety (3) · hybrid (2) · windmill (2) · takeoff (2) · stability (2) · sail (2) · propellers (2) · marine (2) · marine propulsion (2) · airfoil (2) · fan (2) · airship (2) · car (2)
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