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Patents > National tech categories : DE 77h.5 or IT 8 & Number of figures: 1-2

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airplane (35) · frame (14) · construction (12) · design (11) · wings (10) · navigation (8) · control (8) · biplane (7) · Stability (6) · Subsystem (5) · rudder (5) · propeller (5) · fuselage (5) · Tragfläche (4)
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