US PATENT SUBCLASS 373 / 9
.~ Arc furnace


Current as of: June, 1999
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373 /   HD   INDUSTRIAL ELECTRIC HEATING FURNACES

8  DF  ENVIRONMENTAL CONTROL {1}
9.~ Arc furnace


DEFINITION

Classification: 373/9

Arc furnace:

(under subclass 8) Subject mater wherein, the furnace heating element is an electric arc between two electrodes, or between an electrode and a current carrying material (e.g., the charge material).

SEE OR SEARCH THIS CLASS, SUBCLASS:

2+, for arc furnaces combined with other heating means.

60+, for arc furnace devices, per se.