US PATENT SUBCLASS 202 / 181
.~.~.~.~.~ Level control

Current as of: June, 1999
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202 /   HD   DISTILLATION: APPARATUS

81  DF  APPARATUS {4}
82  DF  .~ Systems {6}
152  DF  .~.~ Separatory {3}
163  DF  .~.~.~ Still {13}
176  DF  .~.~.~.~ With distilland treating devices {2}
181.~.~.~.~.~ Level control

DEFINITION

Classification: 202/181

Automatic means for controlling the level of the distilland or rate of feeding the still are provided.

SEE OR SEARCH THIS CLASS, SUBCLASS:

193, and 196.

SEE OR SEARCH CLASS

137, Fluid Handling,

386+, for a liquid level responsive or maintaining system.

196, Mineral Oils: Apparatus.