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1491276
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Patent number 1,491,276
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Issue date Apr 22, 1924
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1447428
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Patent number 1,447,428
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Issue date Mar 6, 1923
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1435691
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Patent number 1,435,691
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Issue date Nov 14, 1922
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1424871
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Patent number 1,424,871
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Issue date Aug 8, 1922
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL