.~ Combined with container, enclosure, or support for material to be heated {12}
390
.~.~ Muffle-type enclosure
DEFINITION
Classification: 219/390
(under subclass 385) Subject matter wherein the container or enclosure structure comprises an inner compartment for holding the material to be heated, the compartment wall, or walls, preventing direct transmission of heat energy derived from the heating means to the material.
SEE OR SEARCH CLASS
126, Stoves and Furnaces, particularly
19+, and 273+ for externally heated domestic ovens.
432, Heating,
212, and 319 for a residual muffle type furnace heated by nonelectric or merely nominally recited electrical heating means.
