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Rotary furnace for melting metal
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Patent number 4,337,929
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Issue date Jul 6, 1982
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College Research Corporation
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Marvin Evans
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3572859
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Patent number 3,572,859
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Issue date Mar 30, 1971
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F27 - FURNACES KILNS OVENS RETORTS
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3561741
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Patent number 3,561,741
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Issue date Feb 9, 1971
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F27 - FURNACES KILNS OVENS RETORTS
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3468522
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Patent number 3,468,522
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Issue date Sep 23, 1969
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3353880
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Patent number 3,353,880
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Issue date Nov 21, 1967
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F27 - FURNACES KILNS OVENS RETORTS
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3197163
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Patent number 3,197,163
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Issue date Jul 27, 1965
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F27 - FURNACES KILNS OVENS RETORTS
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3097834
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Patent number 3,097,834
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Issue date Jul 16, 1963
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F26 - DRYING
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3036823
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Patent number 3,036,823
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Issue date May 29, 1962
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F27 - FURNACES KILNS OVENS RETORTS
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3027553
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Patent number 3,027,553
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Issue date Mar 27, 1962
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F27 - FURNACES KILNS OVENS RETORTS
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2819130
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Patent number 2,819,130
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Issue date Jan 7, 1958
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F26 - DRYING
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2743918
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Patent number 2,743,918
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F27 - FURNACES KILNS OVENS RETORTS
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2657033
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Patent number 2,657,033
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F27 - FURNACES KILNS OVENS RETORTS
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2570082
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Patent number 2,570,082
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Issue date Oct 2, 1951
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F26 - DRYING
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1642482
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Patent number 1,642,482
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Issue date Sep 13, 1927
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F27 - FURNACES KILNS OVENS RETORTS