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Patents > National tech categories : USPC 244/12.1 or None & Number of claims: 25-30

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Stability (6) · Airplane (6) · None (5) · control (4) · design (3) · divided patent (2) · takeoff (2) · rudder (2) · propulsion (2) · piloting (2) · navigation (2) · marine (2) · landing (2) · aerodynamics (2) · hydroaeroplane (2) · automatic stability (2)
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Showing below up to 22 results in range #1 to #22.

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