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Graphite electrode
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Patent number 9,497,804
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Issue date Nov 15, 2016
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GrafTech International Holdings Inc.
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Philip D. Coleman
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H01 - BASIC ELECTRIC ELEMENTS
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Graphite electrodes
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Issue date Feb 2, 2016
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Graftech International Holdings, Inc.
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Philip Dennis Coleman
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Graphite electrodes
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Patent number 8,923,360
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Issue date Dec 30, 2014
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GrafTech International Holdings Inc.
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Philip Dennis Coleman
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Electric arc remelting
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Issue date Apr 7, 1992
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Special Metals Corporation
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Ferhun H. Soykan
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3852510
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F27 - FURNACES KILNS OVENS RETORTS
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3640700
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Patent number 3,640,700
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3516476
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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3416919
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Patent number 3,416,919
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Issue date Dec 17, 1968
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Patent number 3,400,206
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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3244508
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C21 - METALLURGY OF IRON
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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2963756
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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2897340
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Patent number 2,845,293
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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2796450
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Patent number 2,796,450
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR