Drilldown: Patents

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Patents > Year filed: 1900 - 1909 & Inventor country: RU & Number of diagram pages: 0-50000000

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LTA (10) · propulsion (6) · airplane (5) · takeoff (4) · steering (4) · balloon (4) · launching (4) · hybrid (4) · None (3) · propellers (3) · helicopter (3) · frame (2) · sail (2) · railway (2) · Navigation (2) · lift (2) · HTA (2) · wings (2) · envelope (2)
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