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Waldemar Mathews
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Bergheim, DE
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last 30 patents
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Patent Grant
Apparatus for the direct reduction of sulphurous iron ores
Patent number
4,790,517
Issue date
Dec 13, 1988
Korf Engineering GmbH
Waldemar Mathews
C21 - METALLURGY OF IRON
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Patent Grant
Process for the direct reduction of sulphurous iron ores
Patent number
4,735,653
Issue date
Apr 5, 1988
Korf Engineering GmbH
Waldemar Mathews
C21 - METALLURGY OF IRON