Drilldown: Patents

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Patents > Publication date: 1920 & Assigned to: None & Number of text pages: 3

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airplane (14) · construction (14) · design (13) · frame (11) · wings (9) · aerodynamics (7) · propellers (6) · airship (5) · lift (5) · sustentation (4) · Control (4) · LTA (3) · stability (3) · biplane (3) · propulsion (3) · instrument (3) · subsystem (3) · motors (3) · military (3) · metal (3)
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