US PATENT SUBCLASS 373 / 111
.~.~ Having tubular charge containing or supporting element

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

109  DF  RESISTANCE FURNACE DEVICE {7}
110  DF  .~ With internal atmosphere control (e.g., pressure, vacuum, etc.) {2}
111.~.~ Having tubular charge containing or supporting element

DEFINITION

Classification: 373/111

Having tubular charge containing or supporting element:

(under subclass 110) Subject matter wherein the means holding, or holding up the charge has a cylindrical shape.