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Mixing and kneading machine
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Patent number 4,300,838
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Issue date Nov 17, 1981
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Bridgestone Tire Co., Ltd.
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Norimoto Sato
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Mixing and kneading machine
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Patent number 4,284,358
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Issue date Aug 18, 1981
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Bridgestone Tire Co., Ltd.
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Norimoto Sato
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL