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Straight through cement mixer
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Patent number 8,511,887
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Issue date Aug 20, 2013
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Estate of Thomas E. Allen
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Thomas E. Allen
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B28 - WORKING CEMENT, CLAY, OR STONE
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Straight through cement mixer
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Patent number 8,215,823
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Issue date Jul 10, 2012
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Estate of Thomas E. Allen
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Thomas E. Allen
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B28 - WORKING CEMENT, CLAY, OR STONE
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Straight through cement mixer
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Patent number 8,192,070
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Issue date Jun 5, 2012
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Estate of Thomas E. Allen
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Thomas E. Allen
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B28 - WORKING CEMENT, CLAY, OR STONE
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Slurry batcher mixer
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Patent number 6,030,112
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Issue date Feb 29, 2000
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Robert C. Milek
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B28 - WORKING CEMENT, CLAY, OR STONE
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Vibrating concrete mixer
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Patent number 4,478,514
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Issue date Oct 23, 1984
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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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3820763
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Patent number 3,820,763
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Issue date Jun 28, 1974
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B28 - WORKING CEMENT, CLAY, OR STONE
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3480260
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Patent number 3,480,260
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Issue date Nov 25, 1969
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B28 - WORKING CEMENT, CLAY, OR STONE
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3400914
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Patent number 3,400,914
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Issue date Sep 10, 1968
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B28 - WORKING CEMENT, CLAY, OR STONE
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3081983
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Patent number 3,081,983
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Issue date Mar 19, 1963
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B28 - WORKING CEMENT, CLAY, OR STONE
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2226104
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Patent number 2,226,104
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Issue date Dec 24, 1940
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B28 - WORKING CEMENT, CLAY, OR STONE
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2081881
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Patent number 2,081,881
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Issue date May 25, 1937
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B28 - WORKING CEMENT, CLAY, OR STONE
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1621310
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Patent number 1,621,310
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Issue date Mar 15, 1927
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B28 - WORKING CEMENT, CLAY, OR STONE