US PATENT SUBCLASS 202 / 166
.~.~.~.~ Still and stand boiler

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}
166.~.~.~.~ Still and stand boiler

DEFINITION

Classification: 202/166

Associations of still and stand boiler.

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126, Stoves and Furnaces,

361, and indented subclasses.