US PATENT SUBCLASS 202 / 207
.~.~.~ Stump stills

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

81  DF  APPARATUS {4}
*  DD  .~ Types {3}
*  DD  .~.~ Separatory and thermolytic {3}
207.~.~.~ Stump stills

DEFINITION

Classification: 202/207

A portable chamber designed to be placed over a stump and heated from the outside, with means for carrying off the vapors, the temperature being so controlled that first separatory, then thermolytic, distillation occurs.