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2094744
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Patent number 2,094,744
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Issue date Oct 5, 1937
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1995280
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Patent number 1,995,280
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Issue date Mar 19, 1935
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL