US PATENT SUBCLASS 373 / 149
.~ For furnace regulating

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

138  DF  INDUCTION FURNACE DEVICE {10}
149.~ For furnace regulating {1}
150  DF  .~.~> Electrical

DEFINITION

Classification: 373/149

For furnace regulating:

(under subclass 138) Subject matter including means to control the operation of the furnace.