US PATENT SUBCLASS 202 / 173-- .~.~.~.~.~ Series

US PATENT SUBCLASS 202 / 173
.~.~.~.~.~ Series

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

81	DF	APPARATUS {4}
82	DF	.~ Systems {6}
152	DF	.~.~ Separatory {3}
163	DF	.~.~.~ Still {13}
172	DF	.~.~.~.~ Plural {1}
173		.~.~.~.~.~ Series {1}
174	DF	.~.~.~.~.~.~> Multiple effect

DEFINITION

Classification: 202/173

A plurality of stills so connected that either the vapor or the residue of one flows into the other.

(1) Note. When the vapor flows from one still to another in this subclass, it enters into the still itself, and is not simply carried through in pipes, which structure is found in the next subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

155,

SEE OR SEARCH CLASS

196, Mineral Oils: Apparatus,

106,.

203, Distillation: Processes, Separatory, 71+, for a separatory distillation process in which the vapor or residue of a distillation operation is the distilland in a subsequent distillation operation.