US PATENT SUBCLASS 122 / 323
.~.~ Annular firebox

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}
321  DF  .~ Standpipe {2}
323.~.~ Annular firebox

DEFINITION

Classification: 122/323

(under subclass 321) Devices in which the stand pipe extends downwardly below the fire grate, forming an annular firebox.

SEE OR SEARCH THIS CLASS, SUBCLASS:

184, 246, 309, and 475, for stand pipes provided with spur

tubes having an annular firebox.