US PATENT SUBCLASS 122 / 392
.~.~ Water tube boiler

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

379  DF  CLEANING {9}
390  DF  .~ Fluid jet {2}
392.~.~ Water tube boiler

DEFINITION

Classification: 122/392

(under subclass 390) Devices comprising a water tube boiler with the cleaner attached either to the furnace walls or boiler.

SEE OR SEARCH THIS CLASS, SUBCLASS:

361, for structure of headers.

SEE OR SEARCH CLASS

110, Furnaces,

98, 147, 150, 188+, 199+, 296, and 297+, for devices for feeding air and steam to assist the combustion of fuel that would also serve as cleaning jets.