US PATENT SUBCLASS 373 / 49
.~.~ Control
Current as of:
June, 1999
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373 /
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INDUSTRIAL ELECTRIC HEATING FURNACES
42
DF
ELECTROSLAG REMELTING DEVICE
{7}
47
DF
.~ Power supply system {2}
49
.~.~ Control {1}
50
DF
.~.~.~
> By changing electrode position
DEFINITION
Classification: 373/49
Control:
(under subclass 47) Subject matter wherein means are provided to control or regulate electrical power to the furnace.
SEE OR SEARCH THIS CLASS, SUBCLASS:
12, for electron beam vaporizing furnaces with power supply and control circuitry.
25, for plasma furnaces control systems.
40, for glass furnace electrical system regulation.
70, and 104+, for arc furnace power regulation.
135, for resistance furnace control, per se.
148, for induction furnace power supply regulation.
