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Patents > Supplementary to patent : Patent BE-1907-199348 or None & National tech categories: USPC 244/64

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human-powered (16) · LTA (12) · flapping (12) · frame (12) · propulsion (9) · hybrid (8) · propeller (7) · airfoil (5) · ornithopter (4) · None (4) · landing (3) · car (3) · stability (3) · propellers (2) · design (2) · navigation (2) · airplane (2) · helicopter (2) · velocipede (2) · wheels (2)
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Showing below up to 34 results in range #1 to #34.

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