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Patents > Patent agent : E. Blétry or Haseltine, Lake & Co. & Number of diagram pages: 2

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Stability (9) · airplane (9) · LTA (7) · None (4) · Design (4) · frame (4) · wings (4) · hybrid (3) · ballonet (3) · marine (3) · propulsion (3) · car (3) · gyroscope (3)
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