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Mixing system for cement and fluids
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Patent number 10,589,238
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Issue date Mar 17, 2020
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Schlumberger Technology Corporation
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Jonathan Wun Shiung Chong
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B28 - WORKING CEMENT, CLAY, OR STONE
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Concrete mixing system
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Patent number 8,262,278
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Issue date Sep 11, 2012
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Mortrex LLC
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Troy J. Yanoff
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B28 - WORKING CEMENT, CLAY, OR STONE
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Water control apparatus
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Patent number 7,780,335
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Issue date Aug 24, 2010
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Lars Rosaen
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B28 - WORKING CEMENT, CLAY, OR STONE
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Water control apparatus
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Patent number 7,530,728
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Issue date May 12, 2009
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Lars Rosaen
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B28 - WORKING CEMENT, CLAY, OR STONE
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3057488
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Patent number 3,057,488
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Issue date Oct 9, 1962
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B28 - WORKING CEMENT, CLAY, OR STONE
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1891032
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Patent number 1,891,032
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Issue date Dec 13, 1932
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B28 - WORKING CEMENT, CLAY, OR STONE
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1828458
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Patent number 1,828,458
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Issue date Oct 20, 1931
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B28 - WORKING CEMENT, CLAY, OR STONE
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1753546
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Patent number 1,753,546
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Issue date Apr 8, 1930
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B28 - WORKING CEMENT, CLAY, OR STONE
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1665565
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Patent number 1,665,565
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Issue date Apr 10, 1928
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B28 - WORKING CEMENT, CLAY, OR STONE
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1520339
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Patent number 1,520,339
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Issue date Dec 23, 1924
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B28 - WORKING CEMENT, CLAY, OR STONE
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1452702
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Patent number 1,452,702
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Issue date Apr 24, 1923
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B28 - WORKING CEMENT, CLAY, OR STONE
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1278662
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Patent number 1,278,662
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Issue date Sep 10, 1918
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B28 - WORKING CEMENT, CLAY, OR STONE
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1117561
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Patent number 1,117,561
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Issue date Nov 17, 1914
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B28 - WORKING CEMENT, CLAY, OR STONE
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942051
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Patent number 942,051
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Issue date Dec 7, 1909
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B28 - WORKING CEMENT, CLAY, OR STONE
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931657
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Patent number 931,657
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Issue date Aug 17, 1909
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B28 - WORKING CEMENT, CLAY, OR STONE