US PATENT SUBCLASS 373 / 119
.~.~ Wall contained


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

109  DF  RESISTANCE FURNACE DEVICE {7}
117  DF  .~ With heating element detail {7}
119.~.~ Wall contained


DEFINITION

Classification: 373/119

Wall contained:

(under subclass 117) Subject matter wherein the heating element is located within the wall of the furnace.