US PATENT SUBCLASS 373 / 108
.~.~ D.C. power

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

60  DF  ARC FURNACE DEVICE {9}
102  DF  .~ Power supply system {4}
108.~.~ D.C. power

DEFINITION

Classification: 373/108

D.C. power:

(under subclass 102) Subject matter wherein the electric power is supplied by direct current.