US PATENT SUBCLASS 137 / 392
.~ Electrical characteristic sensing

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

386  DF  LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS {11}
392.~ Electrical characteristic sensing

DEFINITION

Classification: 137/392

(under subclass 386) Apparatus in which the liquid level is sensed by sensing an electrical characteristic of a liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5, for processes of fluid mixing controlled by the conductivity of the mixture.

93, for self correlating systems controlled by optical or chemical properties of the ingredients.