(under subclass 379) Devices comprising fluid jet cleaners for removal of soot and ashes when either the structure of the boiler or of the furnace is modified for the reception of the cleaner when in operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
361, for structure of headers with cleaners for water tube boilers.
SEE OR SEARCH CLASS
15, Brushing, Scrubbing, and General Cleaning, see the reference to Class 15 under "Search Class" in the class definition of this class (122).
