4. Liquid purification or separation
  5. With gas-liquid surface contact means

Lester M. Koelsch

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Rotating biological contactor

Liquid purification or separation – With gas-liquid surface contact means
Patent

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Submersible bearing assembly

Bearings – Rotary bearing – Antifriction bearing
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Swimming pool cover

Baths – closets – sinks – and spittoons – Pool type – Accessory
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Profile ID: LFUS-PAI-P-943453

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