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Tool for stone-blowing
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Patent number 4,850,752
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Issue date Jul 25, 1989
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Kango Wolf Power Tools Limited
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Andrew S. Carey-Yard
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Track leveling and ballast tamping machine
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Patent number 4,794,862
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Issue date Jan 3, 1989
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Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H
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Josef Theurer
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Track leveling method
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Patent number 4,528,912
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Issue date Jul 16, 1985
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Johann Hansmann
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Mobile track position correction machine
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Patent number 4,497,256
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Issue date Feb 5, 1985
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Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H
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Johann Hansmann
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Maintenance of railway track
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Patent number 4,386,570
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Issue date Jun 7, 1983
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British Railways Board
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John M. Waters
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3877640
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Patent number 3,877,640
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Issue date Apr 15, 1975
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2669942
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Patent number 2,669,942
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Issue date Feb 23, 1954
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1565697
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Patent number 1,565,697
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Issue date Dec 15, 1925
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES