US PATENT SUBCLASS 392 / 327
.~.~.~.~.~ By electrode current

Current as of: June, 1999
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392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
311  DF  .~ Fluid-in-circuit type heater {6}
324  DF  .~.~ Steam or vapor generator {2}
325  DF  .~.~.~ Line connected boiler {3}
326  DF  .~.~.~.~ Control of electrode immersion level {2}
327.~.~.~.~.~ By electrode current

DEFINITION

Classification: 392/327

By electrode current:

(under subclass 326) Subject matter wherein the electrode immersion level is controlled by the magnitude of current flow between the electrodes.