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Manufacture of plastic products
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Patent number 4,957,671
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Issue date Sep 18, 1990
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M.A. Industries, Inc.
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Harold B. Morris
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Porous sheets and method of manufacture
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Patent number 4,256,845
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Issue date Mar 17, 1981
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Glasrock Products, Inc.
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Harold B. Morris
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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