Drilldown: Patents

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Patents > Inventor country: DE & Publication date: 1800 - 1899 & Family year: 1800 - 1899

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LTA (13) · None (9) · propulsion (9) · balloon (6) · frame (4) · steam (4) · propeller (4) · navigation (4) · hybrid (3) · kite (3) · car (3) · captive (3)
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