US PATENT SUBCLASS 122 / *
.~ Offset subjacent firebox

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

*  DD  HORIZONTAL CYLINDER {6}
*.~ Offset subjacent firebox {2}
189  DF  .~.~> Water roof
190  DF  .~.~> Water tube