US PATENT SUBCLASS 373 / 148
.~.~ Regulating

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

138  DF  INDUCTION FURNACE DEVICE {10}
147  DF  .~ Power supply system {1}
148.~.~ Regulating

DEFINITION

Classification: 373/148

Regulating:

(under subclass 147) Subject matter including means to control the power supplied to the furnace device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12, for electron beam vaporizing furnace power supply and control circuits.

25, for plasma furnace control systems.

40, for glass furnace electrical system regulation.

49+, for electroslag, remelting furnaces with power supply control.

70, and 104+, for arc furnace power regulation.

135, for resistance furnaces with control circuitry. SEE OR SEARCH CLASS

219, Electric Heating,

482+, for heating devices with power supply and voltage, or current regulation or current control means.