Drilldown: Patents

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Patents > Inventor country : AU or DE & Grant date: 1890 - 1899 & Number of figures: 1-4

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LTA (19) · propulsion (11) · balloon (10) · navigation (7) · helicopter (5) · hybrid (5) · marine (5) · car (5) · frame (5) · airplane (5) · propeller (4) · captive (4) · electricity (4) · steering (3) · gas (3) · airship (3) · airfoil (3) · takeoff (3) · jet (3) · None (3)
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