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Patents > Publication date: 1909 & IPCs : IPC B64C23/00 or IPC F16J9/06

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None (7) · hybrid (7) · Ascension (6) · propulsion (6) · helicopter (6) · Design (5) · Airplane (5) · propellers (4) · Sustentation (3) · Control (3) · Lift (3) · Frame (2) · Suspension (2) · Steering (2) · LTA (2) · wings (2) · Cables (2) · Construction (2) · chassis (2)
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