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Sigvard Bergh
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Stockholm, SE
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last 30 patents
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Patent Grant
Ferritic chrome steels of high notched bar impact strength and meth...
Patent number
4,139,377
Issue date
Feb 13, 1979
Granges Nyby AB
Sigvard Bergh
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...