US PATENT SUBCLASS 210 / 121
.~ Float

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}
121.~ Float {2}
122  DF  .~.~> Controls movable separator
123  DF  .~.~> Controls valve {5}

DEFINITION

Classification: 210/121

(under subclass 97) Apparatus in which the responsive means is a float.

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104, for diverse sensing means responsive to material level.