-
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3488816
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Patent number 3,488,816
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Issue date Jan 13, 1970
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B28 - WORKING CEMENT, CLAY, OR STONE
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3195277
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Patent number 3,195,277
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Issue date Jul 20, 1965
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B28 - WORKING CEMENT, CLAY, OR STONE
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3103238
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Patent number 3,103,238
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Issue date Sep 10, 1963
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B28 - WORKING CEMENT, CLAY, OR STONE
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3063677
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Patent number 3,063,677
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Issue date Nov 13, 1962
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B28 - WORKING CEMENT, CLAY, OR STONE
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3036356
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Patent number 3,036,356
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Issue date May 29, 1962
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B28 - WORKING CEMENT, CLAY, OR STONE
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3023475
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Patent number 3,023,475
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Issue date Mar 6, 1962
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B28 - WORKING CEMENT, CLAY, OR STONE
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2913798
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Patent number 2,913,798
-
Issue date Nov 24, 1959
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B28 - WORKING CEMENT, CLAY, OR STONE
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2803868
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Patent number 2,803,868
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Issue date Aug 27, 1957
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B28 - WORKING CEMENT, CLAY, OR STONE
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2597084
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Patent number 2,597,084
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Issue date May 20, 1952
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B28 - WORKING CEMENT, CLAY, OR STONE
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2561581
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Patent number 2,561,581
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Issue date Jul 24, 1951
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B28 - WORKING CEMENT, CLAY, OR STONE
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2414011
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Patent number 2,414,011
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Issue date Jan 7, 1947
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B28 - WORKING CEMENT, CLAY, OR STONE
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2319105
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Patent number 2,319,105
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Issue date May 11, 1943
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B28 - WORKING CEMENT, CLAY, OR STONE
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2048253
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Patent number 2,048,253
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Issue date Jul 21, 1936
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B28 - WORKING CEMENT, CLAY, OR STONE