US PATENT SUBCLASS 122 / 329
.~.~.~.~ Cross

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

235.11  DF  WATER TUBE {52}
324  DF  .~ Straddle {2}
*  DD  .~.~ Single upper drum {1}
327  DF  .~.~.~ Plural lower drum {3}
329.~.~.~.~ Cross

DEFINITION

Classification: 122/329

(under subclass 327) Devices in which the tubes cross each other.