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1557106
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Patent number 1,557,106
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Issue date Oct 13, 1925
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1464799
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Patent number 1,464,799
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Issue date Aug 14, 1923
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL