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3765308
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Issue date Oct 16, 1973
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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2280970
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Patent number 2,280,970
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Issue date Apr 28, 1942
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1673878
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Patent number 1,673,878
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Issue date Jun 19, 1928
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1573183
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Patent number 1,573,183
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Issue date Feb 16, 1926
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1496687
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Patent number 1,496,687
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Issue date Jun 3, 1924
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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1342575
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Patent number 1,342,575
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Issue date Jun 8, 1920
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD