US PATENT SUBCLASS 122 / 264
.~.~ Over firebox

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

235.11  DF  WATER TUBE {52}
262  DF  .~ Horizontal {2}
264.~.~ Over firebox

DEFINITION

Classification: 122/264

(under subclass 262) Devices in which the tubes are disposed over the firebox.