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Hearth roller with suppressed heat crown
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Patent number 5,547,450
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Issue date Aug 20, 1996
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Sumitomo Metal Industries, Ltd.
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Yoshiro Matsumoto
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Isothermal sheet rolling mill
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Patent number 5,042,281
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Issue date Aug 27, 1991
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Arthur G. Metcalfe
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2732591
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Patent number 2,732,591
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Issue date Jan 31, 1956
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2116126
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Patent number 2,116,126
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Issue date May 3, 1938
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...