4. Fluid reaction surfaces (i.e., impellers)
  5. Specific blade structure
  6. Formed with main spar

Jean-Marie Parisy

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Blade provided with a horizontally-wound spar, and a method...

Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Formed with main spar
Reexamination Certificate

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Rotorcraft blade, a rotorcraft rotor provided with said...

Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3317170

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