US PATENT SUBCLASS 432 / 252
.~ Masonry with metallic casing or support

Current as of: June, 1999
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432 /   HD   HEATING

247  DF  HEATING OR HEAT RETAINING WORK CHAMBER STRUCTURE {5}
252.~ Masonry with metallic casing or support

DEFINITION

Classification: 432/252

(under subclass 247) Apparatus comprising a structure of masonry supported or reinforced by a metallic member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

119, for a rotary tumbler drum type furnace having a brick type lining.

SEE OR SEARCH CLASS

110, Furnaces,

336+, for wall structure particularly adapted for use in a solid fuel furnace.

266, Metallurgical Apparatus, 280+, for a lining construction for a metallurgical furnace.

373, Industrial Electric Heating Furnaces,

137, 155, and 164 for a furnace lining particularly adapted

for use in an electrical furnace.