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Switch device
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Patent number 11,473,247
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Issue date Oct 18, 2022
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VOESTALPINE BWG GMBH
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Thomas Bergk
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Railroad switch mechanism
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Patent number 4,637,579
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Issue date Jan 20, 1987
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General Signal Corporation
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Russell M. Hartung
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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All weather switch for railroads
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Patent number 4,534,527
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Issue date Aug 13, 1985
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Canadian Patents and Development Limited
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Lawrence A. J. van Eyken
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Railway switch for vignoles rails
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Patent number 4,159,090
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Issue date Jun 26, 1979
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Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesell...
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Robert Pirker
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3127138
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Patent number 3,127,138
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Issue date Mar 31, 1964
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3099427
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Patent number 3,099,427
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Issue date Jul 30, 1963
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2906477
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Patent number 2,906,477
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Issue date Sep 29, 1959
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1682597
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Patent number 1,682,597
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Issue date Aug 28, 1928
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1409075
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Patent number 1,409,075
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Issue date Mar 7, 1922
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES