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2341074
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Patent number 2,341,074
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Issue date Feb 8, 1944
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1935106
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Patent number 1,935,106
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Issue date Nov 14, 1933
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL