US PATENT SUBCLASS 210 / 113
.~.~.~ By weight of solids

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

97  DF  FLOW, FLUID PRESSURE OR MATERIAL LEVEL, RESPONSIVE {14}
109  DF  .~ Discharge of treated material {5}
112  DF  .~.~ Heavier constituent {3}
113.~.~.~ By weight of solids

DEFINITION

Classification: 210/113

(under subclass 112) Apparatus responsive to weight of accumulated solids.