4. Liquid purification or separation
  5. Gravitational separator
  6. Heavier constituent trap, chamber, or recess

Douglas G. Everson

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Low-pressure dosing system for sewage disposal and...

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Reexamination Certificate

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Passive drain field system for wastewater treatment and...

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

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Universal septic tank fitting

Liquid purification or separation – Gravitational separator – Heavier constituent trap – chamber – or recess
Patent

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Profile ID: LFUS-PAI-P-376404

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