Drilldown: Patents

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Patents > Inventor country: AH & Family year: 1900 - 1999

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propulsion (8) · frame (7) · airplane (7) · kite (4) · LTA (4) · navigation (4) · propellers (4) · Aerodynamics (4) · Whole (3) · ascension (3) · wings (3) · Design (3) · HTA (3)
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