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Patents > Grant date: 1910 - 1919 & CPCs : CPC B64C2700/6274 or CPC B64C35/00 & Number of figures: 4-5

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Airplane (13) · hydroaeroplane (11) · hydroplane (9) · None (8) · design (8) · hybrid (5) · frame (4) · marine (4) · propellers (4) · helicopter (4) · wings (4)
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