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3605627
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Issue date Sep 20, 1971
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B61 - RAILWAYS
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3564271
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Patent number 3,564,271
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B61 - RAILWAYS
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3538853
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Patent number 3,538,853
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3334594
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Patent number 3,334,594
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Issue date Aug 8, 1967
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B61 - RAILWAYS
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3203530
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Patent number 3,203,530
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Issue date Aug 31, 1965
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3177814
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Patent number 3,177,814
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3140669
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Issue date Jul 14, 1964
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B61 - RAILWAYS
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2751091
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B61 - RAILWAYS
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2684039
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B61 - RAILWAYS