US PATENT SUBCLASS 122 / 248
.~.~.~ Fluid fuel

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

235.11  DF  WATER TUBE {52}
247  DF  .~ Coil {2}
*  DD  .~.~ Horizontal {1}
248.~.~.~ Fluid fuel

DEFINITION

Classification: 122/248

(under subclass 247) Devices heated by a fluid fuel burner, the axes of the coils being horizontal.