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Patents > Inventor country: FR & Patent agent : D. Young & Co. or Marks & Clerk

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airplane (11) · stability (5) · propulsion (5) · None (4) · propellers (4) · frame (4) · design (3) · sustentation (3) · navigation (3) · motors (3) · LTA (3) · wings (3) · Construction (3)
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Showing below up to 33 results in range #1 to #33.

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