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3854782
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Issue date Dec 17, 1974
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B61 - RAILWAYS
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3838900
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Patent number 3,838,900
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B61 - RAILWAYS
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3799632
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B61 - RAILWAYS
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3699897
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Patent number 3,699,897
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B61 - RAILWAYS
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3684331
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Patent number 3,684,331
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B61 - RAILWAYS
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3635310
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Patent number 3,635,310
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B61 - RAILWAYS
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3307887
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B61 - RAILWAYS
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3277841
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B61 - RAILWAYS
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3212831
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Patent number 3,212,831
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3211501
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Patent number 3,211,501
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B61 - RAILWAYS
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3119640
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3102759
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3019064
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B61 - RAILWAYS
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3003832
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2969259
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B61 - RAILWAYS
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2913291
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B61 - RAILWAYS
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2903305
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B61 - RAILWAYS