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Patents > Inventor country : CA or HU & Filing date: 1909 & IPCs: None

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Airplane (13) · Propulsion (10) · stability (9) · frame (6) · propellers (6) · whole (5) · Design (5) · lift (4) · LTA (4) · navigation (4) · subsystem (4) · rudder (4) · propeller (3) · biplane (3) · automatic stability (3)
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