US PATENT SUBCLASS 196 / 121
.~.~ Electric

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

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

DEFINITION

Classification: 196/121

(under subclass 120) Mineral-oil vaporizers heated in part at least by electric heaters.

SEE OR SEARCH CLASS

48, Gas: Heating and Illuminating,

65, and 103.

392, Electric Resistance Heating Devices,

386+, for electrically heated vaporizer structure.