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Patents > Patent agent : Herbert Haddan & Co. or Higdon & Longan & Number of text pages: 3-11

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navigation (7) · LTA (7) · frame (7) · control (7) · stability (6) · airplane (5) · propellers (5) · None (4) · propulsion (4) · balloon (4) · design (4) · car (3) · Whole (3) · rudder (3) · wings (3)
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