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Control system for electroslag remelting
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Patent number 4,669,087
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Issue date May 26, 1987
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Institute po Metaloznanie i Technologia na Metalite
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Ivanka A. Rasheva
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Apparatus for pressure die casting
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Patent number 4,393,916
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Issue date Jul 19, 1983
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Institute po Metaloznanie i Technologia na Metalite
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Stancho H. Vutov
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B22 - CASTING POWDER METALLURGY
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Induction crucible furnace
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Patent number 4,227,033
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Issue date Oct 7, 1980
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Institute po Metaloznanie i Technologia na Metalite
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Ivan D. Nikolov
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F27 - FURNACES KILNS OVENS RETORTS
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Nickel-free austenitic corrosion-resistant steel
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Patent number 4,116,683
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Issue date Sep 26, 1978
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Institute po Metaloznanie i Technologia na Metalite
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Ivan Dimov Nikolov
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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