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Patents > National tech categories: CH 129b & Number of diagram pages: 2-3

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Airplane (14) · design (8) · stability (8) · frame (8) · wings (5) · Whole (5) · propellers (4) · None (4) · Construction (3) · control (3) · automatic stability (3) · safety (3) · navigation (3) · Lift (3) · wheels (2) · landing (2) · monoplane (2) · Equilibrium (2) · parachute (2)
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