US PATENT SUBCLASS 432 / 113
.~.~ And having distinct atmosphere supply or removal structure

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


432 /   HD   HEATING

103  DF  TUMBLER-TYPE ROTARY - DRUM FURNACE {8}
112  DF  .~ Externally heated drum or associated heating element heats work by conduction or radiation {2}
113.~.~ And having distinct atmosphere supply or removal structure

DEFINITION

Classification: 432/113

(under subclass 112) Apparatus comprising structure for feeding gaseous material into or removing it from the work chamber of the drum.