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Patents > National tech categories : FR 6.4 or USPC 244/153R & Number of figures: 16-17

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airplane (13) · stability (12) · design (9) · None (5) · aerodynamics (5) · automatic stability (5) · Propellers (5) · wings (4) · Frame (4) · airship (3) · control (3) · flapping (2) · Propulsion (2) · ornithopter (2) · marine (2) · Wood (2) · Construction (2)
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Showing below up to 31 results in range #1 to #31.

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