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Fiber grid reinforcement
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Patent number 4,990,390
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Issue date Feb 5, 1991
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Shimizu Construction Co., Ltd.
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Hirotaka Kawasaki
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Rod material
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Patent number 4,876,143
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Issue date Oct 24, 1989
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Shimizu Construction Co., Ltd.
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Minoru Sugita
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Concrete reinforcing unit
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Patent number 4,706,430
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Issue date Nov 17, 1987
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Shimizu Construction Co., Ltd.
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Minoru Sugita
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E04 - BUILDING