US PATENT SUBCLASS 196 / 120
.~ Special means for heating

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

104  DF  VAPORIZING {22}
120.~ Special means for heating {1}
121  DF  .~.~> Electric

DEFINITION

Classification: 196/120

(under subclass 104) Mineral-oil vaporizers provided with heating means other than furnaces, liquid baths, jackets, or other conventional heating means.

SEE OR SEARCH CLASS

165, Heat Exchange, appropriate subclasses for a heat exchanger, per se.