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DE473784C
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Process for the operation of electric ovens with elevating and lowering electrodes
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GB252017A
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A process of producing iron and other carbon-binding metals and alloys thereof having a very low percentage of carbon
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US1794455A
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Closed tiltable furnace
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US1691439A
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Process for producing metals in electric furnaces
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GB252677A
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Method of producing dense iron and iron alloys directly out of oxide ores
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US1691274A
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Method of producing dense iron and iron alloys directly out of oxide ores
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US1686207A
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Direct reduction process for producing carbon binding metals or metal alloys
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US1585240A
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Method of producing iron and the like with a certain percentage of carbon directly out of iron ore or the like
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CA293889A
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Method of producing dense iron and iron alloys directly out of oxide ores
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CA273369A
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Iron production
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CA285593A
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Carbon metal or alloy
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CA278042A
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Iron alloy
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CA287770A
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Furnace
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CA283819A
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Metal production
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