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3252650
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Patent number 3,252,650
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Issue date May 24, 1966
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2852133
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Patent number 2,852,133
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Issue date Sep 16, 1958
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL