US PATENT SUBCLASS 432 / 152
.~.~ Having distinct atmosphere supply, removal or recirculation structure

Current as of: June, 1999
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432 /   HD   HEATING

120  DF  WORK CHAMBER HAVING HEATING MEANS {12}
121  DF  .~ Having means by which work is progressed or moved mechanically {9}
152.~.~ Having distinct atmosphere supply, removal or recirculation structure

DEFINITION

Classification: 432/152

(under subclass 121) Apparatus including an element or distinct structure by which the atmosphere of the work space is supplied, removed or circulated.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids,

181+, for a drier having a stationary receptacle with a conveyor and structure providing for flow or gas or vapor in contact with the treated material.