US PATENT SUBCLASS 202 / 138
.~.~.~.~.~ With 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}
133  DF  .~.~.~.~ Horizontal {6}
138.~.~.~.~.~ With flues {2}
139  DF  .~.~.~.~.~.~> Vertical {2}
145  DF  .~.~.~.~.~.~> Horizontal {1}

DEFINITION

Classification: 202/138

The retort is heated by combustion in flues.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers,

135.1+, for a boiler having one or more fire tubes or flues wholly or partly surrounded by the water space.