US PATENT SUBCLASS 122 / 211
.~ Fluid or solid fuel

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

209.1  DF  SECTIONAL {9}
211.~ Fluid or solid fuel

DEFINITION

Classification: 122/211

(under subclass 209) Sectional boilers heated by either solid or fluid fuel or both combined.

SEE OR SEARCH THIS CLASS, SUBCLASS:

22, for miscellaneous boilers heated by both solid and fluid fuel.