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Sacrificial anode composition
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Patent number 4,549,948
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Issue date Oct 29, 1985
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Conoco Inc.
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Marvin L. Peterson
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Sacrificial anode apparatus
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Patent number 4,251,343
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Issue date Feb 17, 1981
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Conoco, Inc.
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Marvin L. Peterson
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Compression prestressed weld joints
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Patent number 4,202,484
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Issue date May 13, 1980
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Conoco, Inc.
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Marvin L. Peterson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Sacrificial anode apparatus
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Patent number 4,201,637
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Issue date May 6, 1980
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Conoco, Inc.
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Marvin L. Peterson
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Personnel transfer gangway
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Patent number 4,011,615
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Issue date Mar 15, 1977
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Continental Oil Company
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Orwin G. Maxson
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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