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Patents > Year granted: 1900 - 1909 & CPCs: CPC B64C33/02 & Number of figures: 3-5

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flapping (10) · Propulsion (9) · Wings (5) · ornithopter (5) · frame (5) · Design (4) · Rudder (4) · airplane (4) · propeller (3) · None (3) · airfoil (3) · Propellers (2) · Navigation (2) · Ascension (2) · hybrid (2) · Landing (2) · orthopter (2)
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