US PATENT SUBCLASS 373 / 75
.~.~ Sidewall

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

60  DF  ARC FURNACE DEVICE {9}
71  DF  .~ Furnace body detail {4}
75.~.~ Sidewall {1}
76  DF  .~.~.~> With cooling

DEFINITION

Classification: 373/75

Sidewall:

(under subclass 71) Subject matter including means forming the furnace sidewalls.