US PATENT SUBCLASS 196 / 138
CONDENSING

Current as of: June, 1999
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196 /   HD   MINERAL OILS: APPARATUS

138CONDENSING {3}
139  DF  .~> Dephlegmators or fractionating columns
140  DF  .~> Contact with cooling fluid
141  DF  .~> Automatically controlled temperature

DEFINITION

Classification: 196/138

(under the class definition) Apparatus for condensing mineral-oil vapors which by construction and operation is peculiar to this art.

SEE OR SEARCH CLASS

165, Heat Exchange, appropriate subclasses, for a heat exchanger not specialized to condesing mineral-oil vapor.

202, Distillation: Apparatus, appropriate subclasses, for distillation apparatus particularly

185.1,.

208, Mineral Oils: Processes and Products

347, for distillation of mineral oils.