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Single bend rail
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Patent number 9,328,464
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Issue date May 3, 2016
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Koppers Delaware, Inc.
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William Thomas Urmson
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3383043
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Patent number 3,383,043
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Issue date May 14, 1968
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2936126
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Patent number 2,936,126
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Issue date May 10, 1960
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2929560
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Patent number 2,929,560
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Issue date Mar 22, 1960
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B60 - VEHICLES IN GENERAL
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2915250
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Patent number 2,915,250
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Issue date Dec 1, 1959
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2754065
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Patent number 2,754,065
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Issue date Jul 10, 1956
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2459990
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Patent number 2,459,990
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Issue date Jan 25, 1949
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2406452
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Patent number 2,406,452
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Issue date Aug 27, 1946
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2250880
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Patent number 2,250,880
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Issue date Jul 29, 1941
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2197090
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Patent number 2,197,090
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Issue date Apr 16, 1940
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2183272
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Patent number 2,183,272
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Issue date Dec 12, 1939
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2161149
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Patent number 2,161,149
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Issue date Jun 6, 1939
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2156312
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Patent number 2,156,312
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Issue date May 2, 1939
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2142796
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Patent number 2,142,796
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Issue date Jan 3, 1939
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2071151
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Patent number 2,071,151
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Issue date Feb 16, 1937
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2069361
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Patent number 2,069,361
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Issue date Feb 2, 1937
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2067375
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Patent number 2,067,375
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Issue date Jan 12, 1937
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1952573
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Patent number 1,952,573
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Issue date Mar 27, 1934
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1871977
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Patent number 1,871,977
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Issue date Aug 16, 1932
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1868992
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Patent number 1,868,992
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Issue date Jul 26, 1932
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1857952
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Patent number 1,857,952
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Issue date May 10, 1932
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1818755
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Patent number 1,818,755
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Issue date Aug 11, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1803768
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Patent number 1,803,768
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Issue date May 5, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1803009
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Patent number 1,803,009
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Issue date Apr 28, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1800441
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Patent number 1,800,441
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Issue date Apr 14, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1784370
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Patent number 1,784,370
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Issue date Dec 9, 1930
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1752566
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Patent number 1,752,566
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Issue date Apr 1, 1930
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1707437
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Patent number 1,707,437
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Issue date Apr 2, 1929
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES