US PATENT SUBCLASS 122 / 308
.~.~.~ 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}
305  DF  .~ Spur {8}
307  DF  .~.~ Central standpipe {3}
308.~.~.~ Fluid fuel


DEFINITION

Classification: 122/308

(under subclass 307) Devices heated by fluid fuel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

245, for water tube boilers having a central stand pipe provided with coiled or looped tubes and heated by fluid fuel.

281, for water tube boilers having stand pipes provided with looped tubes.

322, for miscellaneous water tube boilers provided with stand pipes and heated by fluid fuel.