US PATENT SUBCLASS 159 / 44
.~ Automatic

Current as of: June, 1999
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159 /   HD   CONCENTRATING EVAPORATORS

43.1  DF  FLUID FEED OR DISCHARGE DEVICES {2}
44.~ Automatic

DEFINITION

Classification: 159/44

(under subclass 43.1) Subject matter in which the feed or discharge is automatically controlled.

SEE OR SEARCH CLASS

137, Fluid Handling, appropriate subclasses for fluid handling devices of general application, particularly

386+, for the control of liquid flow in response to changes in liquid level.