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Ching-Bing Chang
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Changshu Village, Tanglo Shiang, Miao Li Hsien, TW
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last 30 patents
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Method of recycling a discarded polyurethane foam article
Patent number
5,478,865
Issue date
Dec 26, 1995
Ching-Bing Chang
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL