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F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
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FR617145D1925-06-081926-06-07
Method and device for removing non-metallic deposits, such as rust, soot, scale and the like from metallic surfaces
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