US PATENT SUBCLASS 34 / 73
.~.~ By vapor condensation

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
72  DF  .~ With means to treat gas or vapor {3}
73.~.~ By vapor condensation {4}
74  DF  .~.~.~> With other gas or vapor treatment
75  DF  .~.~.~> Direct contact with cooling substance
76  DF  .~.~.~> With forced circulation {1}
78  DF  .~.~.~> Recirculation of treating gas or vapor

DEFINITION

Classification: 34/73

(under subclass 72) Apparatus having means to condense vapors.

(1) Note. For condensers, per se, see Class 257, Heat Exchange, subclass 24 and indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

468+,

SEE OR SEARCH CLASS

201, Distillation: Processes, Thermolytic, appropriate subclasses for a thermolytic distillation process including condensing vapors.

202, Distillation: Apparatus, particularly 185+, for the association of a still and a condenser.

203, Distillation: Processes, Separatory, appropriate subclasses for a process of vaporizing a liquid material and condensing the vapor.