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Gunter Duderstadt
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Ratingen, DE
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last 30 patents
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Patent Grant
Method of rapidly decarburizing ferro- alloys with oxygen
Patent number
4,165,980
Issue date
Aug 28, 1979
GfE Gesellschaft fur Elektrometallurgie mit Beschrankter Haftung
Friedrich Breuer
C21 - METALLURGY OF IRON
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Patent Grant
Method of refining ferro-alloys
Patent number
4,139,370
Issue date
Feb 13, 1979
Gesellschaft fur Elektrometallurgie mbH
Friedrich Breuer
C21 - METALLURGY OF IRON
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Patent Grant
Process for refining high-carbon ferro-alloys
Patent number
4,130,417
Issue date
Dec 19, 1978
GfE Gesellschaft fur Elektrometallurgie mit beschrankter Haftung
Friedrich Breuer
C21 - METALLURGY OF IRON