4. Liquid purification or separation
  5. With alarm, indicator, register, recorder, signal or...
  6. Responsive to fluid flow

David A. Rein

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Aerobic sewerage digestion process (42 C. process)

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
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Orbit saw

Cutting – Rotatable disc tool pair or tool and carrier – Carrier for rotatable tool movable during cutting
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