US PATENT SUBCLASS 122 / 45
.~ Fluid fuel

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

44.1  DF  FIRE TUBE {11}
45.~ Fluid fuel

DEFINITION

Classification: 122/45

(under subclass 44) Fire tube boilers heated by fluid fuel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

115, 156, 161, 167, 179, and 183, for other fire tube or flue boilers heated by fluid fuel.