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2739797
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Patent number 2,739,797
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Issue date Mar 27, 1956
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B28 - WORKING CEMENT, CLAY, OR STONE
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2527538
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Patent number 2,527,538
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Issue date Oct 31, 1950
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B28 - WORKING CEMENT, CLAY, OR STONE
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2501566
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Patent number 2,501,566
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Issue date Mar 21, 1950
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B28 - WORKING CEMENT, CLAY, OR STONE
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2434216
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Patent number 2,434,216
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Issue date Jan 6, 1948
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B28 - WORKING CEMENT, CLAY, OR STONE
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2286840
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Patent number 2,286,840
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Issue date Jun 16, 1942
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B28 - WORKING CEMENT, CLAY, OR STONE
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2282467
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Patent number 2,282,467
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Issue date May 12, 1942
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B28 - WORKING CEMENT, CLAY, OR STONE
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2223443
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Patent number 2,223,443
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Issue date Dec 3, 1940
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B28 - WORKING CEMENT, CLAY, OR STONE
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2214305
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Patent number 2,214,305
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Issue date Sep 10, 1940
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B28 - WORKING CEMENT, CLAY, OR STONE
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2167243
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Patent number 2,167,243
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Issue date Jul 25, 1939
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B28 - WORKING CEMENT, CLAY, OR STONE
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2136045
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Patent number 2,136,045
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Issue date Nov 8, 1938
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B28 - WORKING CEMENT, CLAY, OR STONE
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2135436
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Patent number 2,135,436
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Issue date Nov 1, 1938
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B28 - WORKING CEMENT, CLAY, OR STONE
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2131682
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Patent number 2,131,682
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Issue date Sep 27, 1938
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B28 - WORKING CEMENT, CLAY, OR STONE
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2067826
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Patent number 2,067,826
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Issue date Jan 12, 1937
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B28 - WORKING CEMENT, CLAY, OR STONE
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1921685
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Patent number 1,921,685
-
Issue date Aug 8, 1933
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B28 - WORKING CEMENT, CLAY, OR STONE
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1296445
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Patent number 1,296,445
-
Issue date Mar 4, 1919
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B28 - WORKING CEMENT, CLAY, OR STONE
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1245973
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Patent number 1,245,973
-
Issue date Nov 6, 1917
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B28 - WORKING CEMENT, CLAY, OR STONE
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1235589
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Patent number 1,235,589
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Issue date Aug 7, 1917
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B28 - WORKING CEMENT, CLAY, OR STONE
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1223314
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Patent number 1,223,314
-
Issue date Apr 17, 1917
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B28 - WORKING CEMENT, CLAY, OR STONE
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1221368
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Patent number 1,221,368
-
Issue date Apr 3, 1917
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B28 - WORKING CEMENT, CLAY, OR STONE
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1111180
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Patent number 1,111,180
-
Issue date Sep 22, 1914
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B28 - WORKING CEMENT, CLAY, OR STONE
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1085548
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Patent number 1,085,548
-
Issue date Jan 27, 1914
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B28 - WORKING CEMENT, CLAY, OR STONE
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1070612
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Patent number 1,070,612
-
Issue date Aug 19, 1913
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B28 - WORKING CEMENT, CLAY, OR STONE
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1056974
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Patent number 1,056,974
-
Issue date Mar 25, 1913
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B28 - WORKING CEMENT, CLAY, OR STONE
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1052628
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Patent number 1,052,628
-
Issue date Feb 11, 1913
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B28 - WORKING CEMENT, CLAY, OR STONE
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977897
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Patent number 977,897
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Issue date Dec 6, 1910
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B28 - WORKING CEMENT, CLAY, OR STONE
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913425
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Patent number 913,425
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Issue date Feb 23, 1909
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B28 - WORKING CEMENT, CLAY, OR STONE
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663999
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Patent number 663,999
-
Issue date Dec 18, 1900
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B28 - WORKING CEMENT, CLAY, OR STONE