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Patents > IPCs : IPC B64C27/04 or IPC B64C3/38 & Number of claims: 5-6

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None (13) · airplane (9) · helicopter (6) · control (5) · stability (4) · sustentation (3) · propulsion (3) · propeller (3) · hybrid (3) · HTA (3) · lift (3) · airfoil (3) · design (3) · wings (2) · biplane (2) · frame (2) · navigation (2) · landing (2) · construction (2) · propellers (2)
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Showing below up to 34 results in range #1 to #34.

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