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3190239
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B61 - RAILWAYS
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3123017
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B61 - RAILWAYS
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3043243
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B60 - VEHICLES IN GENERAL
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2985115
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2716279
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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2259798
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B61 - RAILWAYS
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1881203
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B61 - RAILWAYS
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B61 - RAILWAYS
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1600634
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B61 - RAILWAYS
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1595988
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B61 - RAILWAYS
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1441933
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B61 - RAILWAYS
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1428131
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B61 - RAILWAYS
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1424634
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B61 - RAILWAYS
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1423121
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Patent number 1,423,121
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B61 - RAILWAYS
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1421378
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B61 - RAILWAYS
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1419666
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B61 - RAILWAYS
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1410154
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B61 - RAILWAYS
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1408334
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Patent number 1,408,334
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B60 - VEHICLES IN GENERAL
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1403713
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B61 - RAILWAYS
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1207445
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B61 - RAILWAYS
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1189352
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B61 - RAILWAYS
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1189353
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Patent number 1,189,353
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B61 - RAILWAYS
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1188787
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B61 - RAILWAYS
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1188608
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B61 - RAILWAYS
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1169790
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B61 - RAILWAYS
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1140563
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B61 - RAILWAYS
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1140240
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Patent number 1,140,240
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B61 - RAILWAYS
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1128572
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B61 - RAILWAYS
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1067074
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B61 - RAILWAYS