US PATENT SUBCLASS 122 / 361
.~.~.~ Cleaning

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}
*  DD  .~ Headers {1}
360  DF  .~.~ Closures and couplings {4}
361.~.~.~ Cleaning

DEFINITION

Classification: 122/361

(under subclass 360) Subject matter comprising the structure of the header, with its connections, when formed for the purpose of cleaning the header or boiler tubes, either inside or outside.

SEE OR SEARCH THIS CLASS, SUBCLASS:

379+, for the general apparatus for cleaning boilers of the kind classified in class 122.