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Multi-level stacked mold system
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Patent number 5,464,579
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Issue date Nov 7, 1995
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David Brown
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Pin-less drool prevention system
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Patent number 5,458,843
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Issue date Oct 17, 1995
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Tradesco Mold Limited
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David Brown
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Multi-level stacked mold system
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Patent number 5,229,145
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Issue date Jul 20, 1993
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David Brown
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL