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2768769
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B61 - RAILWAYS
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2648349
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E03 - WATER SUPPLY SEWERAGE
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2503631
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B61 - RAILWAYS
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2286560
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B61 - RAILWAYS
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2134412
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B61 - RAILWAYS
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1338993
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Patent number 1,338,993
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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1338846
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Patent number 1,338,846
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Issue date May 4, 1920
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B61 - RAILWAYS
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1228846
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Patent number 1,228,846
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1200571
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Patent number 1,200,571
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1177512
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B61 - RAILWAYS
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1148674
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B61 - RAILWAYS
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1113330
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B60 - VEHICLES IN GENERAL
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1000104
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B61 - RAILWAYS
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958504
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B61 - RAILWAYS
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B61 - RAILWAYS
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885165
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B61 - RAILWAYS
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847494
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682106
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648346
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B61 - RAILWAYS
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643126
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Patent number 643,126
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B61 - RAILWAYS
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636727
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E03 - WATER SUPPLY SEWERAGE
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426124
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239973
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112969
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Patent number 112,969
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