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Universal roll crossing system
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Patent number 6,158,260
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Issue date Dec 12, 2000
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Danieli Technology, Inc.
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Vladimir B. Ginzburg
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Rolling machine and rolling method
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Patent number 6,151,943
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Issue date Nov 28, 2000
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Hitachi, Ltd.
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Mitsuo Nihei
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Dynamic crown control back-up roll assembly
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Patent number 5,943,895
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Issue date Aug 31, 1999
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SMS Schloemann-Siemag Aktiengesellschaft
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Herbert Lemper
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Five-high rolling mill
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Patent number 5,653,137
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Issue date Aug 5, 1997
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Hitachi, Ltd.
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Yoshio Takakura
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Multipurpose rolling mill
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Patent number 4,841,761
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Issue date Jun 27, 1989
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SMS Schloemann-Siemag Aktiengesellschaft
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Erich Stoy
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Rolling mill
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Patent number 4,194,382
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Issue date Mar 25, 1980
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Hitachi, Ltd.
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Toshiyuki Kajiwara
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3332269
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Patent number 3,332,269
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Issue date Jul 25, 1967
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3190100
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Patent number 3,190,100
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Issue date Jun 22, 1965
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2683570
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Patent number 2,683,570
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Issue date Jul 13, 1954
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2677978
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Patent number 2,677,978
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Issue date May 11, 1954
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2430054
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Patent number 2,430,054
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Issue date Nov 4, 1947
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2056433
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Patent number 2,056,433
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Issue date Oct 6, 1936
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1522473
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Patent number 1,522,473
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Issue date Jan 6, 1925
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...