US PATENT SUBCLASS 373 / 58
.~.~ With open circuit (i.e., charge internal resistance heating)

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

Internet Version by PATENTEC © 1999      Terms of Use


373 /   HD   INDUSTRIAL ELECTRIC HEATING FURNACES

56  DF  WITH CONDENSATING DEVICE {2}
57  DF  .~ Including resistance furnace detail {1}
58.~.~ With open circuit (i.e., charge internal resistance heating)

DEFINITION

Classification: 373/58

With open circuit (e.g., charge internal resistance heating):

(under subclass 57) Subject matter wherein the charge completes the circuit and the internal resistance of the charge is the heating element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

120+, for resistance furnaces with open circuit configurations, per se.