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Patents > Year filed: 1910 & Office : AH or ES or IT & Applicant is inventor : Yes or None & IPCs : IPC B64C27/04 or None

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airplane (10) · subsystem (5) · aerodynamics (5) · propulsion (5) · navigation (4) · LTA (4) · hydrodynamics (4) · stability (4) · propellers (3) · design (3) · frame (3) · control (3) · braking (3)
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