4. Fluid reaction surfaces (i.e., impellers)
  5. Sustained ancillary movement of rotary working member
  6. Continuous rotor oscillation

David Feer

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Air cleaner

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

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Air cleaner

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

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Humidifier with a heating disc

Gas and liquid contact apparatus – With external supply or removal of heat – Automatic control of heat supply or heat effect
Reexamination Certificate

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Oscillating window fan

Fluid reaction surfaces (i.e. – impellers) – Sustained ancillary movement of rotary working member – Continuous rotor oscillation
Patent

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Paraffin bath

Medical and laboratory equipment – Equipment for diagnosis – analysis – or treatment – Article for topical care – nursing or rehabilitation
Design Patent

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Profile ID: LFUS-PAI-P-1235808

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