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3870250
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Patent number 3,870,250
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Issue date Mar 11, 1975
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3822918
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Patent number 3,822,918
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Issue date Jul 9, 1974
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3787006
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Patent number 3,787,006
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Issue date Jan 22, 1974
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3288393
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Patent number 3,288,393
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Issue date Nov 29, 1966
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1753169
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Patent number 1,753,169
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Issue date Apr 1, 1930
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL