US PATENT SUBCLASS 210 / 135
.~.~ Including manually controlled element

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}
134  DF  .~ Plural elements controlled {1}
135.~.~ Including manually controlled element

DEFINITION

Classification: 210/135

(under subclass 134) Apparatus including at least one manually operated flow controller.