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Patents > IPCs: IPC B64C33/00 & Number of text pages: 4-50000000

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ornithopter (7) · wings (6) · design (5) · flapping (5) · HTA (4) · airplane (4) · propulsion (3) · frame (3) · stability (3) · cables (2) · sustentation (2) · subsystem (2) · lift (2) · rudder (2) · propeller (2) · airship (2) · navigation (2)
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