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    Patents

    Current position: Home  >  Scientific Research  >  Patents

    牛大鹏，郭雷，李鸿儒，贾明兴，尤富强. 一种电梯机械零部件的维保方法及系统，发明专利，2024.2.2，中国，专利号：ZL202011476479.8.

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    Service Invention or Not:no