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Mooring system
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Patent number 5,044,829
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Issue date Sep 3, 1991
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Paul W. Hemminger
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Mooring system
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Patent number 4,990,029
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Issue date Feb 5, 1991
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Paul W. Hemminger
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES