US PATENT SUBCLASS 202 / 127-- .~.~.~.~.~.~ Circumvallate flues

US PATENT SUBCLASS 202 / 127
.~.~.~.~.~.~ Circumvallate 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}
120	DF	.~.~.~.~ Vertical {4}
124	DF	.~.~.~.~.~ With heating chamber {3}
127		.~.~.~.~.~.~ Circumvallate flues

DEFINITION

Classification: 202/127

The flues carry the products of combustion or heating gases around the retort.