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3613529
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Patent number 3,613,529
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Issue date Oct 19, 1971
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3580141
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Patent number 3,580,141
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Issue date May 25, 1971
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3556518
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Patent number 3,556,518
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Issue date Jan 19, 1971
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1688901
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Patent number 1,688,901
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Issue date Oct 23, 1928
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD