US PATENT SUBCLASS 373 / 133
.~.~.~ Rod-like

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

DEFINITION

Classification: 373/133

Rodlike:

(under subclass 132) Subject matter wherein the resistor heating element has the shape of an elongated cylinder, or bar.