US PATENT SUBCLASS 432 / 100
.~.~ Having distinct fume outlet and work inlet

Current as of: June, 1999
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432 /   HD   HEATING

95  DF  SHAFT TYPE {2}
96  DF  .~ Having combustion products generated in or fed to shaft {5}
100.~.~ Having distinct fume outlet and work inlet

DEFINITION

Classification: 432/100

(under subclass 96) Apparatus in which the work chamber has a work material supply port distinct from the opening through which the combustion products and any heat generated fumes are discharged.