Drilldown: Patents

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Patents > Year filed: 1890 - 1899 & Number of text pages: 1-2 & Number of claims: None

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propulsion (16) · LTA (15) · propeller (14) · frame (9) · navigation (5) · balloon (4) · car (4) · Design (4) · marine (3) · jet (3) · valve (2) · subsystem (2) · sail (2) · Propellers (2) · kite balloon (2) · hybrid (2) · wings (2) · compressed air (2) · electricity (2)
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