US PATENT SUBCLASS 122 / 274
.~.~ Fluid fuel

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


122 /   HD   LIQUID HEATERS AND VAPORIZERS

235.11  DF  WATER TUBE {52}
273  DF  .~ Longitudinal upper drum {1}
274.~.~ Fluid fuel

DEFINITION

Classification: 122/274

(under subclass 273) Devices heated by fluid fuel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

250, 283, 328, 348, and 356, for analogous art.

331, for transverse horizontal drum boilers.