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Patents > CPCs : CPC B64C27/18 or CPC B64C35/00 & Number of text pages: 4-12

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hydroaeroplane (13) · marine (10) · hydroplane (10) · None (7) · construction (6) · frame (4) · design (4) · hybrid (4) · airplane (4) · wings (3) · flying boat (3) · Sustentation (3) · propulsion (3) · Hydro-aeroplane (3) · helicopter (3) · fuselage (3) · hydroaeroplanes (3) · biplane (2) · floats (2)
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