US PATENT SUBCLASS 122 / *
.~.~.~ Rear of bridge wall

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

235.11  DF  WATER TUBE {52}
275  DF  .~ Loop {3}
*  DD  .~.~ Over firebox {5}
*.~.~.~ Rear of bridge wall {1}
280  DF  .~.~.~.~> Bridge wall header