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Patents > IPCs : IPC B64C3/18 or IPC B64C39/00 & CPCs: CPC B64C39/08 & First filing: Yes

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airplane (9) · None (6) · Stability (5) · construction (3) · multiplane (3) · frame (3) · control (3) · wings (3) · airfoil (3) · aeroplane (3) · whole (2) · wheels (2) · navigation (2) · hybrid (2) · hydroplane (2)
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