4. Liquid purification or separation
  5. Structural installation
  6. Closed circulating system

William K. Potthast

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Portable buoyant skimming apparatus for swimming pools

Liquid purification or separation – Structural installation – Closed circulating system
Patent

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Water and ice rescue device and method of performing a...

Buoys – rafts – and aquatic devices – Water rescue or life protecting apparatus
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1947879

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