Qinda Zeng

Person

  • Fuzhou, CN

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