US PATENT SUBCLASS 373 / 132
.~.~ Non-metallic resistor

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}
132.~.~ Non-metallic resistor {1}
133  DF  .~.~.~> Rod-like

DEFINITION

Classification: 373/132

Nonmetallic resistor:

(under subclass 117) Subject matter including a resistor heating element comprised of a material which is metal free.