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Reclosable bag
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Patent number 4,979,933
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Issue date Dec 25, 1990
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Kraft, Inc.
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Heinz F. Runge
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Reclosable bag
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Patent number 4,936,817
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Issue date Jun 26, 1990
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Kraft, Inc.
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Heinz F. Runge
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Reclosable bag
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Patent number 4,898,280
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Issue date Feb 6, 1990
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Kraft, Inc.
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Heinz F. Runge
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL