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Patents > National tech categories : USPC 244/22 or USPC 244/74 & Number of diagram pages: 2-3

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Inventors:
Julius Uherkovich de Uherkócz (2) · Charles I. Matson (2)
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Charles I. Matson (2) · Julius Uherkovich de Uherkócz (2)
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Tech fields:
flapping (21) · ornithopter (18) · propulsion (11) · frame (11) · None (9) · airplane (9) · propeller (8) · navigation (7) · hybrid (6) · airfoil (4) · parachute (4) · marine (4) · takeoff (3) · rudder (3) · LTA (3) · wings (3)
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