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Concrete crosstie
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Patent number 10,895,042
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Issue date Jan 19, 2021
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Mauricio Javier Gutierrez Romero
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Sleeper
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Patent number 6,070,806
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Issue date Jun 6, 2000
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Vladimir Shalvovich Barbakadze
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Concrete railroad ties
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Patent number 4,925,094
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Issue date May 15, 1990
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Costain Concrete Company Limited
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John Buekett
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3904112
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Patent number 3,904,112
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Issue date Sep 9, 1975
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B28 - WORKING CEMENT, CLAY, OR STONE
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3863329
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Patent number 3,863,329
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Issue date Feb 4, 1975
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3428252
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Patent number 3,428,252
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Issue date Feb 18, 1969
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2779543
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Patent number 2,779,543
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Issue date Jan 29, 1957
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2631784
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Patent number 2,631,784
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Issue date Mar 17, 1953
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2551500
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Patent number 2,551,500
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Issue date May 1, 1951
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1788446
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Patent number 1,788,446
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Issue date Jan 13, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1701442
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Patent number 1,701,442
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Issue date Feb 5, 1929
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1668181
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Patent number 1,668,181
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Issue date May 1, 1928
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1618508
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Patent number 1,618,508
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Issue date Feb 22, 1927
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1618056
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Patent number 1,618,056
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Issue date Feb 15, 1927
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1614405
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Patent number 1,614,405
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Issue date Jan 11, 1927
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1600939
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Patent number 1,600,939
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Issue date Sep 21, 1926
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1566550
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Patent number 1,566,550
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Issue date Dec 22, 1925
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1509405
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Patent number 1,509,405
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Issue date Sep 23, 1924
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1492410
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Patent number 1,492,410
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Issue date Apr 29, 1924
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1489374
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Patent number 1,489,374
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Issue date Apr 8, 1924
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1471251
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Patent number 1,471,251
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Issue date Oct 16, 1923
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1458945
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Patent number 1,458,945
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Issue date Jun 19, 1923
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1458946
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Patent number 1,458,946
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Issue date Jun 19, 1923
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1457537
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Patent number 1,457,537
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Issue date Jun 5, 1923
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES