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Patents > Citations from after 1930: None & Number of text pages: 6 & Number of figures: 1-4

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Airplane (11) · stability (6) · Navigation (5) · frame (5) · automatic stability (4) · propeller (4) · propulsion (4) · rudder (3) · subsystem (3) · helicopter (3) · airfoil (2) · military (2) · Lift (2) · hybrid (2) · None (2) · suspension (2)
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