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3250186
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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Patent number 2,154,825
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Issue date Apr 18, 1939
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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Patent number 2,125,414
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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2110478
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Patent number 2,110,478
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Issue date Mar 8, 1938
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B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
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1958413
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Patent number 1,958,413
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Issue date May 15, 1934
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1952869
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Patent number 1,952,869
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