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2642916
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Patent number 2,642,916
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Issue date Jun 23, 1953
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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2248534
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Patent number 2,248,534
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Issue date Jul 8, 1941
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2172504
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Patent number 2,172,504
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Issue date Sep 12, 1939
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2046628
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Patent number 2,046,628
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Issue date Jul 7, 1936
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1962171
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Patent number 1,962,171
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Issue date Jun 12, 1934
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD