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Hydroextractor
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Patent number 5,152,213
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Issue date Oct 6, 1992
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Hitachi Ltd. Goritsu Mfg Co.
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Norio Masumoto
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B30 - PRESSES
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Multihigh rolling mill
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Patent number 4,918,965
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Issue date Apr 24, 1990
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Hitachi, Ltd.
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Kazuo Kobayashi
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Working roll shift type rolling mill
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Patent number 4,770,021
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Issue date Sep 13, 1988
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Hitachi, Ltd.
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Kazuo Kobayashi
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Continuous rolling mill
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Patent number 4,522,051
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Issue date Jun 11, 1985
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Hitachi, Ltd.
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Masahiro Hayashi
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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