Drilldown: Patents

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Patents > Filing date: 1920 - 1929 & Patent agent : Herbert Haddan & Co. or None

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airplane (23) · frame (15) · wings (9) · design (8) · None (4) · wheels (4) · chassis (4) · propellers (4) · control (4) · motors (3) · propulsion (3) · rudder (3) · LTA (3)
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