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Bending method and bending apparatus
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Patent number 6,722,181
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Issue date Apr 20, 2004
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Toyokoki Co., Ltd.
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Seiju Nagakura
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Hydraulic machine
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Patent number 6,240,758
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Issue date Jun 5, 2001
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Toyokoki Co., Ltd.
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Seiju Nagakura
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Press brake
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Patent number 6,032,509
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Issue date Mar 7, 2000
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Toyokoki Co., Ltd.
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Seiju Nagakura
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Method and an apparatus for bending
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Patent number 5,497,647
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Issue date Mar 12, 1996
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Toyokoki Co., Ltd.
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Seiju Nagakura
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Press device
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Patent number 4,498,328
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Issue date Feb 12, 1985
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Toyokoki Co., Ltd.
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Seiju Nagakura
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...