4. Hydraulic and earth engineering
  5. Fluid control, treatment, or containment
  6. Flow control

Frederick J. Kauppi

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Hydraulic energy dissipating offset stepped spillway

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Reexamination Certificate

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Hydraulic energy dissipating offset stepped spillway and methods

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Portable wetlands

Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1204282

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