US PATENT SUBCLASS 202 / *
.~ Types

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

81  DF  APPARATUS {4}
*.~ Types {3}
*  DD  .~.~> Separatory and thermolytic {3}
*  DD  .~.~> Autothermic {5}
*  DD  .~.~> Separatory {1}