US PATENT SUBCLASS 202 / 98
.~.~.~.~ Tunnels

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}
97  DF  .~.~.~ Stalls {1}
98.~.~.~.~ Tunnels

DEFINITION

Classification: 202/98

The stall is openable and closable at both ends and not necessarily horizontal, and the receptacles are introduced at one end and withdrawn at the other. Heated directly or indirectly.

SEE OR SEARCH CLASS

432, Heating,

121+, for a residual material heating furnace having means by which work is progressed or moved mechanically.