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3825247
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Patent number 3,825,247
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Issue date Jul 23, 1974
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3741535
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Patent number 3,741,535
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Issue date Jun 26, 1973
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3640426
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Patent number 3,640,426
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Issue date Feb 8, 1972
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2181241
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Patent number 2,181,241
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Issue date Nov 28, 1939
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1646230
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Patent number 1,646,230
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Issue date Oct 18, 1927
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL