US PATENT SUBCLASS 196 / 131
.~.~ Unheated

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

104  DF  VAPORIZING {22}
129  DF  .~ Depending legs or spur tubes {2}
131.~.~ Unheated

DEFINITION

Classification: 196/131

(under subclass 130) Mineral-oil vaporizers whose bottoms are not subjected to the direct heating action of the furnace or other heating means, usually for the purpose of avoiding the caking of precipitated carbon.