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Polymer recovery from solution
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Patent number 4,909,898
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Issue date Mar 20, 1990
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Polysar Limited
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Dilipkumar Padliya
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Issue date Aug 15, 1989
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Polysar Limited
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David T. Ahlberg
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Patent number 4,614,772
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Issue date Sep 30, 1986
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Polysar Limited
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Douglas C. Edwards
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL