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3502198
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Patent number 3,502,198
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Issue date Mar 24, 1970
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2919791
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Patent number 2,919,791
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Issue date Jan 5, 1960
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2758703
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Patent number 2,758,703
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Issue date Aug 14, 1956
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1914708
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Patent number 1,914,708
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Issue date Jun 20, 1933
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1770369
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Patent number 1,770,369
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Issue date Jul 8, 1930
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1422656
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Patent number 1,422,656
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Issue date Jul 11, 1922
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1389995
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Patent number 1,389,995
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Issue date Sep 6, 1921
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL