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Girder type switch track
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Patent number 5,247,890
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Issue date Sep 28, 1993
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HSST Corporation
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Kiyoshi Mihirogi
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Multi-articulation switch
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Patent number 5,199,674
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Issue date Apr 6, 1993
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HSST Corporation
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Kiyoshi Mihirogi
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Girder type switch track
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Patent number 5,193,767
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Issue date Mar 16, 1993
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HSST Corporation
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Kiyoshi Mihirogi
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Centering and fixing apparatus
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Patent number 5,178,037
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Issue date Jan 12, 1993
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HSST Corporation
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Kiyoshi Mihirogi
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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