US PATENT SUBCLASS 202 / 172
.~.~.~.~ Plural

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}
172.~.~.~.~ Plural {1}
173  DF  .~.~.~.~.~> Series {1}

DEFINITION

Classification: 202/172

The system includes more than one still with or without individual condensers and arranged to be used either in parallel or to be used alternately.

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155+,

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196, Mineral Oils: Apparatus,

105,.