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Patents > Patent agent : A. Mathey-Doret or None & Number of text pages: 4

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stability (8) · Airplane (7) · None (4) · frame (4) · propulsion (3) · metal (3) · wings (3) · HTA (2) · Ascension (2) · ornithopter (2) · navigation (2) · construction (2) · motors (2) · Hybrid (2) · Coleopter (2) · Helicopter (2) · automatic stability (2) · Design (2) · heavier-than-air (2)
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