Descriptions for F23J and notes/indexes are displayed on this screen.
| F23J
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REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES (combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, F23G 7/06)
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Note(s)
This subclass covers also the cleaning of surfaces of furnace tubes, flame tubes, water tubes, flues or the like of boilers, heat-exchange or heat-transfer conduits, which surfaces are contaminated by combustion products or combustion residues.This subclass does not cover the cleaning of surfaces of boilers, heat exchange or heat-transfer conduits contaminated by other than combustion products or combustion residues, which is covered by subclass F28G.
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Subclass indexes
REMOVAL OF SOLID COMBUSTION PRODUCTS OR RESIDUES | From combustion chamber | 1/00 | From places beyond the fire | 3/00 | TREATMENT OF COMBUSTION PRODUCTS OR RESIDUES | Supply of chemicals; preventing solidification; Treating smoke or fumes | 7/00; 9/00; 15/00 | FLUES, FITTINGS FOR CHIMNEYS OR FLUES | 11/00, 13/00 | SUBJECT MATTER NOT PROVIDED FOR IN OTHER GROUPS OF THIS SUBCLASS | 99/00 |
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