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Patents > Patent agent : M. B. Twondes? or Munn & Co. & Number of figures: 7-8

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None (7) · airplane (7) · LTA (5) · navigation (4) · stability (4) · propeller (3) · propulsion (3) · helicopter (2) · frame (2) · flapping (2) · propellers (2) · control (2) · wheels (2) · Water-wheels (2) · marine (2)
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None (9) · USPC 244/233 (3) · USPC 244/177 (3) · USPC 244/90R (2) · USPC 244/30 (2) · USPC 244/234 (2)
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