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Patents > Filing date: 1910 - 1919 & IPCs : IPC B64C29/00 or IPC B64C31/06

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Kite (14) · None (7) · stability (6) · propellers (5) · construction (4) · kites (4) · frame (4) · sustentation (4) · lift (4) · airplane (4) · Ascension (4) · VTOL (3) · propulsion (3)
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Showing below up to 39 results in range #1 to #39.

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