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Patents > CPCs : CPC B64C13/00 or CPC Y10S244/904 & Number of diagram pages: 4

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airplane (9) · Control (6) · frame (6) · None (5) · Stability (5) · rudder (5) · Propellers (5) · wings (4) · Design (3) · automatic stability (3) · flying machine (2) · construction (2) · flexibility (2) · navigation (2)
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