Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F27
FURNACES; KILNS; OVENS; RETORTS
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F27D
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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3/00
Charging; Discharging; Manipulation of charge
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F27D3/15
Tapping equipment; Equipment for removing; or retaining; slag
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F27D3/1545
Equipment for removing or retaining slag
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F27D3/1554
for removing the slag from the surface of the melt
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F27D3/1581
by the use of blowers
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