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Patents > Year filed: 1909 & Inventor country : HU or NO or SE & Applicant firm: None & Related to aircraft : 1 or Yes

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Airplane (12) · propulsion (9) · LTA (8) · stability (8) · subsystem (6) · Design (6) · Propellers (6) · Lift (5) · Whole (5) · automatic stability (4) · propeller (4) · dirigible (4) · navigation (4) · frame (4) · balloon (3) · Aerodynamics (3) · Ascension (3) · Construction (3) · wings (3)
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