US PATENT SUBCLASS 202 / 224
.~.~.~.~.~ Shields

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

81  DF  APPARATUS {4}
*  DD  .~ Types {3}
*  DD  .~.~ Autothermic {5}
217  DF  .~.~.~ Retort {6}
222  DF  .~.~.~.~ Structural features {3}
224.~.~.~.~.~ Shields

DEFINITION

Classification: 202/224

The retort is coated with protective material over a whole or part of its surface or has a baffle or refractory substance shielding it from the flame.

SEE OR SEARCH CLASS

432, Heating,

248, for residual heating chamber structure including a protected, lined or reinforced melt holding section.