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Patents > Year filed: 1913 & Office : DE or DEG or FR & Patent agent : Armengaud jeune or Dupont et Elluin or E. Blétry or Herbert Haddan & Co. or J. Germain or Munn & Co. & Number of text pages: 1-2

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airplane (12) · frame (10) · Design (9) · LTA (7) · construction (6) · Aerodynamics (6) · propellers (6) · wings (4) · Fuselage (4) · stability (4) · Control (4) · dirigibles (3) · military (3) · balloons (3) · automatic stability (3)
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