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Composite water barrier sheet
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Patent number 5,091,234
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Issue date Feb 25, 1992
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Bryan M. McGroarty
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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Water barrier
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Patent number 5,079,088
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Issue date Jan 7, 1992
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Paramount Technical Products, Inc.
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Bryan M. McGroarty
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Water barrier
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Patent number 4,693,923
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Issue date Sep 15, 1987
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Bryan M. McGroarty
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING