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Ditcher method and apparatus
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Patent number 4,736,534
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Issue date Apr 12, 1988
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The Marmon Group, Inc.
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Gordon E. Daniels
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Railway ballast cleaning apparatus
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Patent number 4,203,493
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Issue date May 20, 1980
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Southern Railway Company
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John R. Miller
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3423858
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Patent number 3,423,858
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Issue date Jan 28, 1969
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3380180
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Patent number 3,380,180
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Issue date Apr 30, 1968
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3316666
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Patent number 3,316,666
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Issue date May 2, 1967
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2900745
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Patent number 2,900,745
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Issue date Aug 25, 1959
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2842069
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Patent number 2,842,069
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Issue date Jul 8, 1958
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2814387
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Patent number 2,814,387
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Issue date Nov 26, 1957
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2747850
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Patent number 2,747,850
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Issue date May 29, 1956
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2740358
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Patent number 2,740,358
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Issue date Apr 3, 1956
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2734730
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Patent number 2,734,730
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Issue date Feb 14, 1956
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2300017
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Patent number 2,300,017
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Issue date Oct 27, 1942
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2272429
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Patent number 2,272,429
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Issue date Feb 10, 1942
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2196880
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Patent number 2,196,880
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Issue date Apr 9, 1940
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2165068
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Patent number 2,165,068
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Issue date Jul 4, 1939
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2145763
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Patent number 2,145,763
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Issue date Jan 31, 1939
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2142208
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Patent number 2,142,208
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Issue date Jan 3, 1939
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2022150
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Patent number 2,022,150
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Issue date Nov 26, 1935
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2013735
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Patent number 2,013,735
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Issue date Sep 10, 1935
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2003606
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Patent number 2,003,606
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Issue date Jun 4, 1935
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1953979
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Patent number 1,953,979
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Issue date Apr 10, 1934
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1951451
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Patent number 1,951,451
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Issue date Mar 20, 1934
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1831483
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Patent number 1,831,483
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Issue date Nov 10, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1815950
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Patent number 1,815,950
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Issue date Jul 28, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1793389
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Patent number 1,793,389
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Issue date Feb 17, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1792148
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Patent number 1,792,148
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Issue date Feb 10, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1747154
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Patent number 1,747,154
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Issue date Feb 11, 1930
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1743833
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Patent number 1,743,833
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Issue date Jan 14, 1930
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1710963
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Patent number 1,710,963
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Issue date Apr 30, 1929
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES