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Patents > Patent agent : Higdon & Longan or None & Number of text pages: 4

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stability (10) · Airplane (8) · None (5) · frame (4) · propulsion (3) · metal (3) · hybrid (3) · helicopter (3) · Wings (3) · automatic stability (3) · navigation (2) · Design (2) · construction (2) · motors (2) · heavier-than-air (2) · Coleopter (2) · HTA (2) · Ascension (2)
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