Patents
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C22 - Metallurgy; Ferrous or non-ferrous alloys; Treatment of alloys or non-ferrous metals
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C22B - Production or refining of metals; Pretreatment of raw materials
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C22B 21 - Obtaining aluminium
Patents for C22B 21 - Obtaining aluminium (4,001)
01/1976
01/27/1976
US3935003
Process for melting metal
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