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2950834
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Patent number 2,950,834
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Issue date Aug 30, 1960
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2942747
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Patent number 2,942,747
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Issue date Jun 28, 1960
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL