US PATENT SUBCLASS 122 / 115
.~.~ Fluid fuel


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}
115.~.~ Fluid fuel


DEFINITION

Classification: 122/115

(under subclass 114) Devices heated by fluid fuel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

22, for miscellaneous boilers heated by solid or fluid fuel.

23, for miscellaneous boilers heated by fluid fuel.

24, for boilers heated by fluid fuel which is exploded while burning.

43, for combined fire tube and water tube boilers heated by fluid fuel that are of a miscellaneous nature.

156, for vertical flue boilers heated by fluid fuel. 161, and 183, for other types of vertical flue boilers heated by fluid fuel.

167, 177 and 179, for vertical flue boilers combined with internal water tubes and heated by fluid fuel.