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Frame structured bridge
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Patent number 5,513,408
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Issue date May 7, 1996
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Hiroyuki Minakami
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Frame structured bridge
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Patent number 5,493,746
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Issue date Feb 27, 1996
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Hiroyuki Minakami
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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