US PATENT SUBCLASS 122 / 125
.~.~ Top water chamber

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

44.1  DF  FIRE TUBE {11}
114  DF  .~ Vertical {13}
125.~.~ Top water chamber

DEFINITION

Classification: 122/125

(under subclass 114) Devices having a separate water chamber above the steam space, through which the fire tubes pass to prevent the leaking of flue joints or to heat feed water.

SEE OR SEARCH THIS CLASS, SUBCLASS:

83, 123 and 164, for similar art.