4. Aeronautics and astronautics
  5. Aircraft, heavier-than-air
  6. Helicopter or auto-rotating wing sustained, i.e., gyroplanes

Galen I. Barefoot

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Active control of tone noise in engine ducts

Aeronautics and astronautics – Miscellaneous
Patent

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Air vehicle yaw control system

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent

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Scissor linkage type slotted flap mechanism

Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent

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Profile ID: LFUS-PAI-P-549336

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