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Metallurgical furnace
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Patent number 9,915,476
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Issue date Mar 13, 2018
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9282-3087 QUEBEC INC.
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John Chao
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F27 - FURNACES KILNS OVENS RETORTS
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DC Arc furnace component
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Patent number 4,435,813
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Issue date Mar 6, 1984
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Asea Aktiebolag
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Sven-Einar Stenkvist
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C21 - METALLURGY OF IRON
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Lining unit
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Patent number 4,376,808
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Issue date Mar 15, 1983
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Vladimir D. Kudinov
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F27 - FURNACES KILNS OVENS RETORTS
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Fire brick unit
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Patent number 4,148,165
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Issue date Apr 10, 1979
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Kyushu Taikarenga Kabushiki Kaisha
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Akira Watanabe
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F27 - FURNACES KILNS OVENS RETORTS
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3832478
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Patent number 3,832,478
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Issue date Aug 27, 1974
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F27 - FURNACES KILNS OVENS RETORTS
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3808764
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Patent number 3,808,764
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Issue date May 7, 1974
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F27 - FURNACES KILNS OVENS RETORTS
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3781962
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Patent number 3,781,962
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Issue date Jan 1, 1974
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F27 - FURNACES KILNS OVENS RETORTS
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3698068
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Patent number 3,698,068
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Issue date Oct 17, 1972
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F27 - FURNACES KILNS OVENS RETORTS