US PATENT SUBCLASS 48 / 103
.~.~.~ Electric heater


Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

61  DF  GENERATORS {4}
89  DF  .~ Retort {12}
102 R  DF  .~.~ Oil {6}
103.~.~.~ Electric heater


DEFINITION

Classification: 48/103

Retorts in which is located an electric heater for gasifying the oil.

(1) Note. This subclass does not include apparatus or processes where an electrolytic action is effected upon the material gasified, for example.

(2) Note. For electrical or wave energy generators, excepting radiant energy apparatus provided for in Class 250, Radiant Energy, specialized for the preparation of gaseous compounds or elements, and involving chemical reactions which are caused by more than the mere thermal effects of the electrical or wave energy, see Class 204, Chemistry: Electrical and Wave Energy.

SEE OR SEARCH CLASS

392, Electric Resistance Heating Devices,

301+,.

431, Combustion,

208, for a burner fed by gas generated by an electrical heating means.