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Resilient safety barrier
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Patent number 5,503,496
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Issue date Apr 2, 1996
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Voigt Products Incorporated
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William L. Voigt
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Resilient safety barrier
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Patent number 5,468,093
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Issue date Nov 21, 1995
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Voigt Products, Incorporated
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William L. Voigt
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES