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Container concrete mixing plant
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Patent number 6,832,851
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Issue date Dec 21, 2004
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Walter-Heilit Verkehrswegebau GmbH
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Alexander von Wilcken
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B28 - WORKING CEMENT, CLAY, OR STONE
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3502306
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Patent number 3,502,306
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Issue date Mar 24, 1970
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B28 - WORKING CEMENT, CLAY, OR STONE
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3464676
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Patent number 3,464,676
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Issue date Sep 2, 1969
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B28 - WORKING CEMENT, CLAY, OR STONE
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3175812
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Patent number 3,175,812
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Issue date Mar 30, 1965
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B28 - WORKING CEMENT, CLAY, OR STONE
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2806680
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Patent number 2,806,680
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Issue date Sep 17, 1957
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B28 - WORKING CEMENT, CLAY, OR STONE
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2298258
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Patent number 2,298,258
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Issue date Oct 6, 1942
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B28 - WORKING CEMENT, CLAY, OR STONE
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2072301
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Patent number 2,072,301
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Issue date Mar 2, 1937
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B28 - WORKING CEMENT, CLAY, OR STONE
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1495415
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Patent number 1,495,415
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Issue date May 27, 1924
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B28 - WORKING CEMENT, CLAY, OR STONE
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979778
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Patent number 979,778
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Issue date Dec 27, 1910
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B28 - WORKING CEMENT, CLAY, OR STONE