US PATENT SUBCLASS 202 / 87
.~.~.~.~ Retort heated by combustion


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

81  DF  APPARATUS {4}
82  DF  .~ Systems {6}
85  DF  .~.~ Thermolytic and autothermic {2}
86  DF  .~.~.~ Retort and kiln {1}
87.~.~.~.~ Retort heated by combustion


DEFINITION

Classification: 202/87

The retort is heated by combustion of the gases from the kiln, which latter may be a producer.

SEE OR SEARCH CLASS

48, Gas: Heating and Illuminating,

76, 77 and 78, and indented subclasses.