US PATENT SUBCLASS 432 / 235
.~ Conveyor, chute or work agitator element

Current as of: June, 1999
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432 /   HD   HEATING

233  DF  HEATING APPARATUS ELEMENT HAVING PROTECTIVE COOLING STRUCTURE {4}
235.~ Conveyor, chute or work agitator element {1}
236  DF  .~.~> Roll

DEFINITION

Classification: 432/235

(under subclass 233) Apparatus in which the cooled element is a part of a work chute, conveyor or agitator.

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116, for a rotary drum furnace having protective cooling structure.

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165, Heat Exchange,

92+, for a hollow stirrer or scraper.