4. Fluid reaction surfaces (i.e., impellers)
  5. Specific blade structure
  6. Radial flow devices

Guan Hua Su

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Enhancements to high efficiency ceiling fan

Fluid reaction surfaces (i.e. – impellers) – Method of operation
Reexamination Certificate

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Enhancements to high efficiency ceiling fan

Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Concave surface
Reexamination Certificate

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High efficiency ceiling fan

Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Radial flow devices
Patent

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High efficiency ceiling fan blades

Fluid reaction surfaces (i.e. – impellers) – With illumination means
Reexamination Certificate

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