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Patents > Grant date: 1912 & Patent agent : Armengaud jeune or Boult, Wade & Tennant & Number of text pages: 3-4

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airplane (11) · design (9) · frame (8) · Wings (6) · construction (6) · stability (6) · landing (6) · automatic stability (4) · control (4) · chassis (4) · springs (3) · wheels (3) · elasticity (3) · propellers (3) · aerodynamics (3) · propulsion (3)
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