US PATENT SUBCLASS 122 / *
.~ Over firebox


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

235.11  DF  WATER TUBE {52}
*.~ Over firebox {2}
288  DF  .~.~> Headers at right angles
*  DD  .~.~> Water grate {1}