US PATENT SUBCLASS 432 / 203
.~.~.~ Pump for atmosphere

Current as of: June, 1999
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432 /   HD   HEATING

120  DF  WORK CHAMBER HAVING HEATING MEANS {12}
200  DF  .~ Work chamber having gaseous material supply or removal structure {2}
201  DF  .~.~ Air flow-through type {3}
203.~.~.~ Pump for atmosphere

DEFINITION

Classification: 432/203

(under subclass 201) Apparatus in which the air stream is caused to flow by a mechanical, electrical or jet pump.