US PATENT SUBCLASS 122 / 249
.~.~ Vertical

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}
249.~.~ Vertical {3}
250 R  DF  .~.~.~> Fluid fuel {1}
251  DF  .~.~.~> Central magazine
252  DF  .~.~.~> Water firebox

DEFINITION

Classification: 122/249

(under subclass 247) Devices, the axes of the coils being vertical.

SEE OR SEARCH THIS CLASS, SUBCLASS:

183, for flues with spiral water conduit.