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Ballast discharge car
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Patent number 7,252,039
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Issue date Aug 7, 2007
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BNSF Railway Company
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John H. Bosshart
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B61 - RAILWAYS
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Pneumatic outlet valve
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Patent number 4,382,725
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Issue date May 10, 1983
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ACF Industries, Incorporated
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Richard H. Dugge
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B61 - RAILWAYS
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2989929
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Patent number 2,989,929
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Issue date Jun 27, 1961
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B61 - RAILWAYS
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2720175
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Patent number 2,720,175
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Issue date Oct 11, 1955
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B61 - RAILWAYS
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2471874
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Patent number 2,471,874
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Issue date May 31, 1949
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B61 - RAILWAYS
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2353310
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Patent number 2,353,310
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Issue date Jul 11, 1944
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B61 - RAILWAYS
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2186701
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Patent number 2,186,701
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Issue date Jan 9, 1940
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B61 - RAILWAYS
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2046040
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Patent number 2,046,040
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Issue date Jun 30, 1936
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B61 - RAILWAYS
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2041211
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Patent number 2,041,211
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Issue date May 19, 1936
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B61 - RAILWAYS
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1981714
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Patent number 1,981,714
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Issue date Nov 20, 1934
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B61 - RAILWAYS
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1962629
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Patent number 1,962,629
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Issue date Jun 12, 1934
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B61 - RAILWAYS
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1891228
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Patent number 1,891,228
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Issue date Dec 20, 1932
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B61 - RAILWAYS
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1840895
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Patent number 1,840,895
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Issue date Jan 12, 1932
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1812539
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Patent number 1,812,539
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Issue date Jun 30, 1931
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B61 - RAILWAYS
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1810770
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Patent number 1,810,770
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Issue date Jun 16, 1931
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B61 - RAILWAYS
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1694537
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Patent number 1,694,537
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Issue date Dec 11, 1928
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B61 - RAILWAYS
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1645587
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Patent number 1,645,587
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Issue date Oct 18, 1927
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1634021
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Patent number 1,634,021
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Issue date Jun 28, 1927
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B61 - RAILWAYS
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1620948
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Patent number 1,620,948
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Issue date Mar 15, 1927
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B61 - RAILWAYS
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1617575
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Patent number 1,617,575
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Issue date Feb 15, 1927
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B61 - RAILWAYS
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1609807
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Patent number 1,609,807
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Issue date Dec 7, 1926
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B61 - RAILWAYS
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1529837
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Patent number 1,529,837
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Issue date Mar 17, 1925
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B61 - RAILWAYS
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1530263
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Patent number 1,530,263
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Issue date Mar 17, 1925
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B61 - RAILWAYS
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1517245
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Patent number 1,517,245
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Issue date Dec 2, 1924
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B61 - RAILWAYS