Drilldown: Patents

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Patents > Inventor country : DE or IN & Number of figures: 12-14

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airplane (11) · propulsion (10) · LTA (10) · stability (9) · None (6) · frame (4) · navigation (4) · lift (4) · aerodynamics (4) · control (3) · airship (3) · propellers (3) · design (3) · helicopter (3) · sustentation (3) · whole (3) · wings (3)
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