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Furnace ash air seal
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Patent number 4,503,783
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Issue date Mar 12, 1985
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General Kinematics Corporation
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Albert Musschoot
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F27 - FURNACES KILNS OVENS RETORTS
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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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3824069
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Patent number 3,824,069
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Issue date Jul 16, 1974
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F27 - FURNACES KILNS OVENS RETORTS
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3692286
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Patent number 3,692,286
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Issue date Sep 19, 1972
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3686773
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Patent number 3,686,773
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Issue date Aug 29, 1972
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F27 - FURNACES KILNS OVENS RETORTS
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3365521
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Patent number 3,365,521
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Issue date Jan 23, 1968
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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2857153
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Patent number 2,857,153
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Issue date Oct 21, 1958
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F27 - FURNACES KILNS OVENS RETORTS
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2377943
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Patent number 2,377,943
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Issue date Jun 12, 1945
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F27 - FURNACES KILNS OVENS RETORTS
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2367063
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Patent number 2,367,063
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Issue date Jan 9, 1945
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F27 - FURNACES KILNS OVENS RETORTS
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2276496
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Patent number 2,276,496
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Issue date Mar 17, 1942
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F27 - FURNACES KILNS OVENS RETORTS
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1900234
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Patent number 1,900,234
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Issue date Mar 7, 1933
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F27 - FURNACES KILNS OVENS RETORTS
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1859359
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Patent number 1,859,359
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Issue date May 24, 1932
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...