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3096693
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Patent number 3,096,693
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Issue date Jul 9, 1963
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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2968388
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Patent number 2,968,388
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Issue date Jan 17, 1961
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2563596
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Patent number 2,563,596
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Issue date Aug 7, 1951
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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1608693
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Patent number 1,608,693
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Issue date Nov 30, 1926
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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1382788
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Patent number 1,382,788
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Issue date Jun 28, 1921
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD