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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41/00
Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
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B22D41/44
Consumable closure means, i.e. closure means being used only once
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B22D41/46
Refractory plugging masses
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