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Industrial furnace cover
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Patent number 9,453,679
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Issue date Sep 27, 2016
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Refractory Intellectual Property GmbH & Co. KG
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Peter Zottler
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3029055
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Patent number 3,029,055
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Issue date Apr 10, 1962
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F27 - FURNACES KILNS OVENS RETORTS
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3019561
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Patent number 3,019,561
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Issue date Feb 6, 1962
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F27 - FURNACES KILNS OVENS RETORTS
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1992932
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Patent number 1,992,932
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Issue date Mar 5, 1935
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F27 - FURNACES KILNS OVENS RETORTS