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Method of melting metals
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Patent number 5,366,536
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Issue date Nov 22, 1994
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Nippon Sanso Corporation
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Toshio Suwa
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C21 - METALLURGY OF IRON
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3290029
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Patent number 3,290,029
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Issue date Dec 6, 1966
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F27 - FURNACES KILNS OVENS RETORTS
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2823910
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Patent number 2,823,910
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Issue date Feb 18, 1958
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F27 - FURNACES KILNS OVENS RETORTS
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2653809
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Patent number 2,653,809
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Issue date Sep 29, 1953
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F27 - FURNACES KILNS OVENS RETORTS
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2590090
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Patent number 2,590,090
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Issue date Mar 25, 1952
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...