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Method of soaking steel pieces
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Patent number 4,311,454
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Issue date Jan 19, 1982
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ITOH Iron & Steel Works Co. Ltd.
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Seigo Tabuchi
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C21 - METALLURGY OF IRON
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3854863
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Patent number 3,854,863
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Issue date Dec 17, 1974
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F27 - FURNACES KILNS OVENS RETORTS
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3768626
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Patent number 3,768,626
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Issue date Oct 30, 1973
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3598376
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Patent number 3,598,376
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Issue date Aug 10, 1971
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3575279
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Patent number 3,575,279
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Issue date Apr 20, 1971
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3572522
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Patent number 3,572,522
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Issue date Mar 30, 1971
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C21 - METALLURGY OF IRON
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3276756
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Patent number 3,276,756
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Issue date Oct 4, 1966
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F27 - FURNACES KILNS OVENS RETORTS
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3224758
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Patent number 3,224,758
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Issue date Dec 21, 1965
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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3179390
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Patent number 3,179,390
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Issue date Apr 20, 1965
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3154298
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Patent number 3,154,298
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Issue date Oct 27, 1964
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3089653
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Patent number 3,089,653
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Issue date May 14, 1963
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F27 - FURNACES KILNS OVENS RETORTS
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3089688
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Patent number 3,089,688
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Issue date May 14, 1963
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F27 - FURNACES KILNS OVENS RETORTS
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3056878
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Patent number 3,056,878
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Issue date Oct 2, 1962
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F27 - FURNACES KILNS OVENS RETORTS
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2993609
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Patent number 2,993,609
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Issue date Jul 25, 1961
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F27 - FURNACES KILNS OVENS RETORTS
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2885200
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Patent number 2,885,200
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Issue date May 5, 1959
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F27 - FURNACES KILNS OVENS RETORTS
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2369419
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Patent number 2,369,419
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Issue date Feb 13, 1945
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C21 - METALLURGY OF IRON
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2343337
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Patent number 2,343,337
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Issue date Mar 7, 1944
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F27 - FURNACES KILNS OVENS RETORTS
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2174918
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Patent number 2,174,918
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Issue date Oct 3, 1939
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C21 - METALLURGY OF IRON
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1577587
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Patent number 1,577,587
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Issue date Mar 23, 1926
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F27 - FURNACES KILNS OVENS RETORTS