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Patents > Assigned to: None & Number of diagram pages: 4 & Number of figures: 12-16

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De Bert Hartley (3) · None (2)
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stability (12) · None (9) · airplane (8) · frame (6) · design (5) · rudder (5) · automatic stability (5) · construction (5) · propulsion (4) · propeller (4) · sail (3) · navigation (3) · LTA (3) · hydroaeroplane (3) · Aerodynamics (3) · wings (3) · airship (3) · airfoil (3)
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Showing below up to 41 results in range #1 to #41.

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