US PATENT SUBCLASS 122 / 210
.~ Fluid fuel

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

209.1  DF  SECTIONAL {9}
210.~ Fluid fuel

DEFINITION

Classification: 122/210

(under subclass 209) Sectional boilers heated by fluid fuel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

23, for miscellaneous boilers heated by fluid fuel.

211, for sectional boilers heated by either solid or fluid fuel.