4. Fluid reaction surfaces (i.e., impellers)
  5. Diverse impellers or working members

Yousef Jarrah

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Centrifugal fan

Fluid reaction surfaces (i.e. – impellers) – Diverse impellers or working members
Reexamination Certificate

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Coin-shaped fan blade assembly

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

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Slots in fan housing to reduce tonal noise

Rotary kinetic fluid motors or pumps – With sound or vibratory wave absorbing or preventing means...
Reexamination Certificate

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Wavy fan blade

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

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Profile ID: LFUS-PAI-P-2938482

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