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Patents > Filing date: 1910 - 1919 & IPCs: IPC B64C33/02 & Number of figures: 8-40

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ornithopter (13) · flapping (8) · frame (7) · wings (6) · design (5) · None (5) · toy (4) · control (4) · HTA (4) · subsystem (3) · propulsion (3) · Airplane (3) · construction (2) · hybrid (2) · whole (2) · steering (2) · navigation (2) · model (2)
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Showing below up to 36 results in range #1 to #36.

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