US PATENT SUBCLASS 432 / 119
.~ Having brick-type lining

Current as of: June, 1999
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432 /   HD   HEATING

103  DF  TUMBLER-TYPE ROTARY - DRUM FURNACE {8}
119.~ Having brick-type lining

DEFINITION

Classification: 432/119

(under subclass 103) Apparatus in which the drum comprises an outer cylindrical member and an inner layer made up of ceramic modules.