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Patents > Supplementary to patent: None & IPCs : IPC B64C25/00 or IPC B64C3/38 & Number of diagram pages: 3-10

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airplane (14) · None (10) · frame (8) · stability (5) · landing (5) · wheels (4) · construction (3) · navigation (3) · hydroaeroplane (2) · propulsion (2) · whole (2) · Control (2) · landing gear (2) · takeoff (2) · fuselage (2)
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