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Patents > IPCs : IPC B64B1/00 or IPC B64C39/00 & Family year: 1907

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LTA (22) · propulsion (11) · construction (7) · airplane (7) · propellers (6) · Design (6) · frame (5) · navigation (4) · dirigible (4) · subsystem (4) · stability (4) · balloon (4) · wings (3) · marine (3) · wheels (3) · rudder (3)
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