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Method of making concrete
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Patent number 11,572,312
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Issue date Feb 7, 2023
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MACROCEMENT INDUSTRIES LTD.
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Alexander Ozersky
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B28 - WORKING CEMENT, CLAY, OR STONE
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Dual shaft pan mixer
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Patent number 4,758,095
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Issue date Jul 19, 1988
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Chichibu Cement Kabushiki Kaisha
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Mamoru Kanda
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B28 - WORKING CEMENT, CLAY, OR STONE
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Concrete mixer
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Patent number 4,522,499
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Issue date Jun 11, 1985
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Hudelmaier; Ingrid
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Gerhard Hudelmaier
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B28 - WORKING CEMENT, CLAY, OR STONE
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3082106
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Patent number 3,082,106
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Issue date Mar 19, 1963
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B28 - WORKING CEMENT, CLAY, OR STONE
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2551583
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Patent number 2,551,583
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Issue date May 8, 1951
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B28 - WORKING CEMENT, CLAY, OR STONE
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2164044
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Patent number 2,164,044
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Issue date Jun 27, 1939
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B28 - WORKING CEMENT, CLAY, OR STONE
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1791710
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Patent number 1,791,710
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Issue date Feb 10, 1931
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B28 - WORKING CEMENT, CLAY, OR STONE
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1764699
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Patent number 1,764,699
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Issue date Jun 17, 1930
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B28 - WORKING CEMENT, CLAY, OR STONE