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Patents > IPCs : IPC B64C23/00 or IPC F16C33/61 & Number of figures: 6-8

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airplane (9) · None (7) · Propulsion (6) · propellers (5) · whole (5) · Design (4) · Navigation (4) · frame (4) · lift (3) · Ascension (3) · stability (3) · LTA (2) · suspension (2) · aerodynamics (2) · helicopter (2) · sustentation (2) · heavier-than-air (2) · Hybrid (2) · construction (2)
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Showing below up to 34 results in range #1 to #34.

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