4. Fluid reaction surfaces (i.e., impellers)
  5. Combined or convertible
  6. Hub lubrication or seal

Chao-chin Yao

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Ceiling fan

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Design Patent

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Hanging fan with a ceiling mount structure

Fluid reaction surfaces (i.e. – impellers) – Combined or convertible – Hub lubrication or seal
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2338618

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