FI (Note)/(Index) list

Descriptions for F28G and notes/indexes are displayed on this screen.

F28G CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OF BOILERS (cleaning pipes or tubes in general B08B 9/02; devices or arrangements for removing water, minerals, or sludge from boilers while the boiler is in operation, or which remain in position while the boiler is in operation, or are specifically adapted to boilers without any other utility F22B 37/48; removal or treatment of combustion products or combustion residues F23J; removing ice from heat-exchange apparatus F28F 17/00)

Subclass indexes

APPLIANCES FOR CLEANING: NON-ROTARY; ROTARY; OTHERS; DETAILS

1/00; 3/00; 13/00; 15/00

CLEANING PROCESSES BY: DISTORTION; VIBRATION; FLUSHING OR WASHING; COMBUSTION; OTHERS

5/00; 7/00; 9/00; 11/00; 13/00

COMBINATION OF PROCESSES

13/00