US PATENT SUBCLASS 210 / 104
.~.~ Responsive to material level

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}
103  DF  .~ Diverse sensing means {2}
104.~.~ Responsive to material level

DEFINITION

Classification: 210/104

(under subclass 103) Apparatus responsive to a change in the level of the liquid or solids.