Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
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F23J
REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
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3/00
Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
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F23J3/02
Cleaning furnace tubes; Cleaning flues or chimneys
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