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3922797
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Patent number 3,922,797
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Issue date Dec 2, 1975
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F27 - FURNACES KILNS OVENS RETORTS
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3839803
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Patent number 3,839,803
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Issue date Oct 8, 1974
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F27 - FURNACES KILNS OVENS RETORTS
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3705620
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Patent number 3,705,620
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Issue date Dec 12, 1972
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F27 - FURNACES KILNS OVENS RETORTS
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3705460
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Patent number 3,705,460
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Issue date Dec 12, 1972
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F27 - FURNACES KILNS OVENS RETORTS
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3686773
-
Patent number 3,686,773
-
Issue date Aug 29, 1972
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F27 - FURNACES KILNS OVENS RETORTS
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3412477
-
Patent number 3,412,477
-
Issue date Nov 26, 1968
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F27 - FURNACES KILNS OVENS RETORTS
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2609149
-
Patent number 2,609,149
-
Issue date Sep 2, 1952
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F27 - FURNACES KILNS OVENS RETORTS
-
2431799
-
Patent number 2,431,799
-
Issue date Dec 2, 1947
-
F28 - HEAT EXCHANGE IN GENERAL
-
2371513
-
Patent number 2,371,513
-
Issue date Mar 13, 1945
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F28 - HEAT EXCHANGE IN GENERAL
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2312034
-
Patent number 2,312,034
-
Issue date Feb 23, 1943
-
F27 - FURNACES KILNS OVENS RETORTS
-
2163513
-
Patent number 2,163,513
-
Issue date Jun 20, 1939
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F27 - FURNACES KILNS OVENS RETORTS