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Patents > Office : DE or LU & National tech categories : DE 77h.2 or DE 77h.5 or USPC 244/22 & Number of text pages: 1

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airplane (16) · Tragfläche (8) · frame (8) · design (7) · LTA (6) · None (4) · stability (4) · propeller (4) · wings (4) · airfoil (4) · camber (3) · whole (3) · control (3) · subsystem (3) · propulsion (3)
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