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Non-slip structure
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Patent number 7,380,376
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Issue date Jun 3, 2008
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Shin Caterpillar Mitsubishi Ltd.
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Shunji Ohno
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Non-slip material
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Patent number 7,162,839
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Issue date Jan 16, 2007
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Shin Caterpillar Mitsubishi Ltd.
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Shunji Ohno
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Construction machine
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Patent number 6,601,324
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Issue date Aug 5, 2003
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Shin Caterpillar Mitsubishi, Ltd.
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Kazumichi Iwasa
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING