US PATENT SUBCLASS 373 / 21
.~ Remelting furnace (i.e., ingot remelting)

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373 /   HD   INDUSTRIAL ELECTRIC HEATING FURNACES

18  DF  PLASMA FURNACE DEVICE {3}
21.~ Remelting furnace (i.e., ingot remelting)

DEFINITION

Classification: 373/21

Remelting furnace (i.e., ingot remelting):

(under subclass 18) Subject matter wherein the plasma furnace remelts ingots produced from a previous melting/costing process.

SEE OR SEARCH THIS CLASS, SUBCLASS:

15, for electron beam furnace ingot remelting apparatus.

42+, for electroslag remelting devices.

67+, for arc furnace ingot remelting apparatus.