US PATENT SUBCLASS 202 / 125
.~.~.~.~.~.~ Alternate reverse flow flues

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

81  DF  APPARATUS {4}
82  DF  .~ Systems {6}
96  DF  .~.~ Thermolytic {5}
105  DF  .~.~.~ Retort {14}
120  DF  .~.~.~.~ Vertical {4}
124  DF  .~.~.~.~.~ With heating chamber {3}
125.~.~.~.~.~.~ Alternate reverse flow flues

DEFINITION

Classification: 202/125

The heating chamber is divided into vertical flues, alternate ones of which carry flames and products of combustion in opposite directions.