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Patents > Office: DE & CPCs : CPC B64C3/00 or CPC B64C3/52

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airplane (24) · frame (21) · wings (14) · Construction (14) · None (11) · biplane (8) · design (8) · airfoil (6) · subsystem (5) · Fuselage (5) · lift (4) · wing (4) · Tragfläche (4) · wing warping (3) · camber (3) · metal (3) · triplane (2) · monoplane (2) · motors (2) · cables (2)
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