US PATENT SUBCLASS 122 / 213
.~ Plural firebox

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

209.1  DF  SECTIONAL {9}
213.~ Plural firebox

DEFINITION

Classification: 122/213

(under subclass 209) Sectional boilers having a plurality of fireboxes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

232, for sectional boilers having a water grate above the main grate for supporting waste material.