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Carton opening feature
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Patent number 5,868,307
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Issue date Feb 9, 1999
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Westvaco Corporation
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Barry Gene Calvert
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Heat sealed, ovenable food cartons
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Patent number 5,660,898
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Issue date Aug 26, 1997
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Westvaco Corporation
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Barry Gene Calvert
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Heat sealed, ovenable food carton lids
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Patent number 5,425,972
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Issue date Jun 20, 1995
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Westvaco Corporation
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Barry G. Calvert
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Method for producing barrier packaging
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Patent number 5,418,008
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Issue date May 23, 1995
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Westvaco Corporation
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Barry G. Calvert
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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