4. Fluid reaction surfaces (i.e., impellers)
  5. Rotor having flow confining or deflecting web, shroud or...
  6. Axially extending shroud ring or casing

Brian Havel

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High-flow low torque fan

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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Low pressure fan with high-flow

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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Low pressure fan with Y-shaped blades

Fluid reaction surfaces (i.e. – impellers) – Having clutch or brake means
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2800673

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