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Patents > Patent agent : E. Blétry or Higdon & Longan & Number of claims: 2-4

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airplane (12) · stability (11) · Subsystem (7) · propellers (7) · propulsion (6) · aerodynamics (5) · Design (5) · wings (4) · construction (3) · Sustentation (3) · LTA (3) · None (3) · Lift (3)
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