US PATENT SUBCLASS 392 / 318
.~.~.~ Current control means

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
311  DF  .~ Fluid-in-circuit type heater {6}
314  DF  .~.~ Continuous flow of fluid being heated {4}
318.~.~.~ Current control means

DEFINITION

Classification: 392/318

Current control means:

(under subclass 314) Subject matter wherein the fluid-in-circuit heater includes means to vary the flow of electrical current between an external source of current and the heating device.

SEE OR SEARCH CLASS

219, Electric Heating,

507+, for significant current connection means for heating devices in general under the class definition.