Drilldown: Patents

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Patents > Related to aircraft : 0? or 1911-07-04 or Yes & Patent agent: Herbert Haddan & Co.

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frame (11) · LTA (8) · stability (8) · airplane (7) · navigation (6) · design (6) · construction (4) · landing (4) · control (4) · None (3) · wheels (3) · springs (3) · rudder (3) · propulsion (3) · propellers (3) · Helicopter (3) · ballonet (3) · car (3) · balloon (3) · automatic stability (3)
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