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Continuous rotary injection molding machine
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Patent number 8,651,854
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Issue date Feb 18, 2014
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Hunan China Sun Pharmaceutical Machinery Co. Ltd.
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Liangsheng Ai
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3078517
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Patent number 3,078,517
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Issue date Feb 26, 1963
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2375955
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Patent number 2,375,955
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Issue date May 15, 1945
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL