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2026458
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Patent number 2,026,458
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Issue date Dec 31, 1935
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1927698
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Patent number 1,927,698
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Issue date Sep 19, 1933
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL