US PATENT SUBCLASS 373 / 124
.~.~.~.~ Including starting resistor

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

109  DF  RESISTANCE FURNACE DEVICE {7}
117  DF  .~ With heating element detail {7}
120  DF  .~.~ Open circuit (e.g., charge internal resistance heating) {4}
123  DF  .~.~.~ With preheating {1}
124.~.~.~.~ Including starting resistor

DEFINITION

Classification: 373/124

Including starting resistor:

(under subclass 123) Subject matter including a resistor which is the preheating means.