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Plasma and oxygas fired furnace
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Issue date Oct 29, 2019
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Umicore
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Jeroen Heulens
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Furnace for heating and melting zinc
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Patent number 4,705,260
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Issue date Nov 10, 1987
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Republic Steel Corporation
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Ralph D. Geer
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3635457
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Patent number 3,635,457
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Issue date Jan 18, 1972
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F27 - FURNACES KILNS OVENS RETORTS
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3464573
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Patent number 3,464,573
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Issue date Sep 2, 1969
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F27 - FURNACES KILNS OVENS RETORTS
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1974392
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Patent number 1,974,392
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Issue date Sep 18, 1934
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F27 - FURNACES KILNS OVENS RETORTS
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1912288
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Patent number 1,912,288
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Issue date May 30, 1933
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F27 - FURNACES KILNS OVENS RETORTS