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Tiltable support post structure
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Patent number 8,857,795
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Issue date Oct 14, 2014
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Protec Engineering, Inc.
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Yoichi Nishita
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Shock-absorbing fence
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Patent number 8,079,571
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Issue date Dec 20, 2011
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Protec Engineering Inc.
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Yoichi Nishita
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES