Drilldown: Patents

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Patents > Filing date: 1904 & Citations from after 1930: None & Number of text pages: 3-4

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navigation (13) · propulsion (12) · LTA (12) · frame (11) · airplane (10) · stability (7) · rudder (7) · propellers (5) · whole (4) · None (4) · balloon (4) · propeller (3) · design (3) · lift (3) · airfoil (3) · hybrid (3) · wing-warping (3) · construction (3)
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