US PATENT SUBCLASS 414 / 213
.~.~ Device comprises screw conveyor

Current as of: June, 1999
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414 /   HD   MATERIAL OR ARTICLE HANDLING

147  DF  CHAMBER OF A TYPE UTILIZED FOR A HEATING FUNCTION AND MATERIAL CHARGING OR DISCHARGING MEANS THEREFOR {6}
209  DF  .~ Discharging of chamber by driven device {3}
213.~.~ Device comprises screw conveyor

DEFINITION

Classification: 414/213

Device comprises screw conveyor:

(under subclass 209) Apparatus wherein the driven device is a conveyor of the screw type.