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Patents > IPCs: IPC B64C39/00 & Number of claims: 7-40 & Number of diagram pages: 2-3

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Airplane (13) · None (5) · navigation (5) · stability (4) · construction (4) · HTA (4) · biplane (3) · design (3) · propellers (2) · multiplane (2) · landing (2) · hydroeaeroplane (2) · propulsion (2) · frame (2)
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