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Caiyu Bao

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  • Fuzhou, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Elevator operation quality tester
    • Patent number 11,365,089
    • Issue date Jun 21, 2022
    • FUJIAN SPECIAL EQUIPMENT INSPECTION AND RESEARCH INSTITUTE
    • Wei Zhang
    • B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents