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Tap hole drill
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Patent number 6,269,890
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Issue date Aug 7, 2001
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Paul Wurth, S.A.
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Victor Kremer
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C21 - METALLURGY OF IRON
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Tap hole plugging device
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Patent number 5,511,768
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Issue date Apr 30, 1996
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Paul Wurth S.A.
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Victor Kremer
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C21 - METALLURGY OF IRON
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Furnace probe
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Patent number 4,403,516
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Issue date Sep 13, 1983
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Paul Wurth S.A.
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Pierre Mailliet
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C21 - METALLURGY OF IRON
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