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Patents > Filing date: 1913 & Assigned to: None & IPCs : IPC B64C23/00 or IPC B64C35/00 & First filing: Yes

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hydroplane (13) · hydroaeroplane (9) · aerodynamics (5) · marine (4) · design (4) · None (3) · frame (3) · wheels (3) · airplane (3) · buoyancy (3) · landing (3)
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