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Curing oven
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Patent number 4,717,339
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Issue date Jan 5, 1988
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Erik Kersting
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F27 - FURNACES KILNS OVENS RETORTS
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3427009
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Patent number 3,427,009
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Issue date Feb 11, 1969
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F27 - FURNACES KILNS OVENS RETORTS
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3323662
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Patent number 3,323,662
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Issue date Jun 6, 1967
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B28 - WORKING CEMENT, CLAY, OR STONE
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2206277
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Patent number 2,206,277
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Issue date Jul 2, 1940
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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2096170
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Patent number 2,096,170
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Issue date Oct 19, 1937
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F27 - FURNACES KILNS OVENS RETORTS
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1837146
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Patent number 1,837,146
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Issue date Dec 15, 1931
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F27 - FURNACES KILNS OVENS RETORTS
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1827446
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Patent number 1,827,446
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Issue date Oct 13, 1931
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F27 - FURNACES KILNS OVENS RETORTS