Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B22
CASTING; POWDER METALLURGY
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B22D
CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
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43/00
Mechanical cleaning, e.g. skimming of molten metals
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B22D43/001
Retaining slag during pouring molten metal
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B22D43/004
by using filtering means
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