US PATENT SUBCLASS 122 / 47
.~.~ Horizontal

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

44.1  DF  FIRE TUBE {11}
*  DD  .~ Flue {2}
47.~.~ Horizontal

DEFINITION

Classification: 122/47

(under subclass 44) Devices having a large horizontal flue, not covered by the definitions of other subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

50, and 78, for analogous art.

136, for horizontal flue boilers with transverse fire tubes.

149, for horizontal flue boilers with return fire tubes within the same part of the boiler as the flue.