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Patents > Office : DE or Other & Inventor country: RU & National tech categories: FR 6.4

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airplane (15) · aerodynamics (8) · propulsion (7) · LTA (7) · stability (6) · wings (5) · automatic stability (5) · aeroplane (4) · ascension (4) · frame (4) · control (3) · speed (3) · lift (3) · hybrid (3) · None (3)
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Showing below up to 42 results in range #1 to #42.

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