US PATENT SUBCLASS 266 / 213
.~ Revolving drum-type furnace

Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

200  DF  MEANS FOR MELTING OR VAPORIZING METAL OR TREATING LIQUEFIED METAL {19}
213.~ Revolving drum-type furnace

DEFINITION

Classification: 266/213

(under subclass 200) Device wherein the vessel is mounted to be turned about its longitudinal axis through more than 360 degrees.

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248, for a drum-type melting or refining vessel adapted to revolve or oscillate about its longitudinal axis.

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432, Heating,

103+, for a tumbler-type rotary drum furnace of general utility.