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1709343
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Patent number 1,709,343
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Issue date Apr 16, 1929
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1473330
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Patent number 1,473,330
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Issue date Nov 6, 1923
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1409988
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Patent number 1,409,988
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Issue date Mar 21, 1922
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1399050
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Patent number 1,399,050
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Issue date Dec 6, 1921
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1386685
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Patent number 1,386,685
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Issue date Aug 9, 1921
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1383056
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Patent number 1,383,056
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Issue date Jun 28, 1921
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1371126
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Patent number 1,371,126
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Issue date Mar 8, 1921
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1344808
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Patent number 1,344,808
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Issue date Jun 29, 1920
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1297976
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Patent number 1,297,976
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Issue date Mar 18, 1919
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1207558
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Patent number 1,207,558
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Issue date Dec 5, 1916
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1156754
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Patent number 1,156,754
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Issue date Oct 12, 1915
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1148353
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Patent number 1,148,353
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Issue date Jul 27, 1915
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1143442
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Patent number 1,143,442
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Issue date Jun 15, 1915
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1124772
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Patent number 1,124,772
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Issue date Jan 12, 1915
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1097082
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Patent number 1,097,082
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Issue date May 19, 1914
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1086091
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Patent number 1,086,091
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Issue date Feb 3, 1914
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1063471
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Patent number 1,063,471
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Issue date Jun 3, 1913
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1061967
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Patent number 1,061,967
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Issue date May 20, 1913
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1048594
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Patent number 1,048,594
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Issue date Dec 31, 1912
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1043126
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Patent number 1,043,126
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Issue date Nov 5, 1912
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1020984
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Patent number 1,020,984
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Issue date Mar 26, 1912
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1001788
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Patent number 1,001,788
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Issue date Aug 29, 1911
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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996706
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Patent number 996,706
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Issue date Jul 4, 1911
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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995140
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Patent number 995,140
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Issue date Jun 13, 1911
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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994827
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Patent number 994,827
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Issue date Jun 13, 1911
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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972857
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Patent number 972,857
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Issue date Oct 18, 1910
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES