US PATENT SUBCLASS 122 / 48
.~.~ Vertical

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

44.1  DF  FIRE TUBE {11}
*  DD  .~ Flue {2}
48.~.~ Vertical

DEFINITION

Classification: 122/48

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

SEE OR SEARCH THIS CLASS, SUBCLASS:

49, and 114+, for other vertical fire tubes.