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Mat installation
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Patent number 6,027,285
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Issue date Feb 22, 2000
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Submar, Inc.
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Thomas M. Angel
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Non-Abrasive subsea mat
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Patent number 5,944,449
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Issue date Aug 31, 1999
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Submar, Inc.
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Thomas M. Angel
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Non-abrasive subsea mat
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Patent number 5,846,023
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Issue date Dec 8, 1998
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Submar, Inc.
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Thomas M. Angel
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Non-abrasive subsea mat
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Patent number 5,722,795
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Issue date Mar 3, 1998
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Submar, Inc.
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Thomas M. Angel
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Autonomous cleaning inspection device
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Patent number 4,445,524
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Issue date May 1, 1984
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Santa Fe International Corporation
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Thomas M. Angel
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING