US PATENT SUBCLASS 122 / 319
.~.~.~ Fluid fuel

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

235.11  DF  WATER TUBE {52}
305  DF  .~ Spur {8}
318  DF  .~.~ Vertical {2}
319.~.~.~ Fluid fuel

DEFINITION

Classification: 122/319

(under subclass 318) Devices which are heated by fluid fuel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

179, 283, 333, and 348, for other types of vertical water tube boilers heated by fluid fuel.