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Patents > Patent agent : Allen Bros. & Co. or Hippolyte Josse & Number of text pages: 3-6000000

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airplane (10) · wings (5) · construction (4) · frame (3) · stability (3) · Control (3) · ornithopter (2) · navigation (2) · Motors (2) · LTA (2) · helicopter (2) · fuselage (2) · None (2) · dirigible (2) · design (2) · automatic stability (2)
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