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2002616
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Patent number 2,002,616
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Issue date May 28, 1935
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1606834
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Patent number 1,606,834
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Issue date Nov 16, 1926
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL