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Patents > IPCs: IPC B64C3/00 & Number of text pages: 4-50000000

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airplane (12) · wings (8) · construction (8) · Frame (7) · None (5) · design (4) · stability (4) · metal (3) · multiplane (3) · fuselage (3) · navigation (3) · Subsystem (2) · Structure (2) · chassis (2) · Hybrid (2) · hydroaeroplane (2) · stays (2) · aeroplane (2)
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