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Valve
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Patent number 11,131,391
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Issue date Sep 28, 2021
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OTRAJET INC.
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Ching-Hao Chen
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3902704
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Patent number 3,902,704
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Issue date Sep 2, 1975
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3780995
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Patent number 3,780,995
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Issue date Dec 25, 1973
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3728053
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Patent number 3,728,053
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Issue date Apr 17, 1973
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL