US PATENT SUBCLASS 373 / 63
.~.~.~ Charge fed into space

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

60  DF  ARC FURNACE DEVICE {9}
61  DF  .~ Indirect {3}
62  DF  .~.~ Arc between spaced electrodes {2}
63.~.~.~ Charge fed into space

DEFINITION

Classification: 373/63

Charge fed into space:

(under subclass 62) Subject matter wherein the charge passes through the arc as it is added to the furnace.