Drilldown: Patents

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Patents > Related to aircraft: Yes & IPCs: None & Number of figures: 16-50

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frame (17) · design (13) · airplane (13) · propulsion (12) · stability (11) · propellers (8) · automatic stability (7) · propeller (6) · Construction (6) · aerodynamics (6) · LTA (6) · navigation (6) · parachute (5) · safety (5) · whole (5) · Airship (4) · helicopter (4) · marine (4)
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