Drilldown: Patents

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Patents > Office : DE or GB & Publication date: 1800 - 1899 & Cites these patents : 1887 or None & Number of text pages: 2

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LTA (11) · propulsion (7) · balloon (6) · navigation (4) · captive (4) · propeller (4) · gas (3) · kite (3) · balloons (3) · steam (2) · hydrogen (2) · compressed air (2) · dirigible (2) · electricity (2) · steering (2) · airplane (2) · propellers (2) · aerodynamics (2)
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