US PATENT SUBCLASS 432 / 206
.~ Interior bell forms muffle

Current as of: June, 1999
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432 /   HD   HEATING

120  DF  WORK CHAMBER HAVING HEATING MEANS {12}
206.~ Interior bell forms muffle

DEFINITION

Classification: 432/206

(under subclass 120) Apparatus including an inner chamber formed by a removable hood, open its bottom, that sits on a heating chamber floor to form a closed inner work chamber within the heating chamber.