1–20 of 438 hits
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    Safety device of vertical lifting elevator

    Free access
    LI QI | European Patent Office | 2022

    Bicycle with frame built-in steel cable lock structure

    Free access
    LI QI | European Patent Office | 2023

    Elevator compensation rope tensioning device

    Free access
    LI QI | European Patent Office | 2022

    Large stele anti-breakage horizontal placement equipment

    Free access
    LI QI | European Patent Office | 2021

    Automatic installation equipment for bus station vertical handrail

    Free access
    LI QI | European Patent Office | 2021

    Speed-limiting tamper-proofing method and device for electric bicycle

    Free access
    LI QI | European Patent Office | 2023

    Self-adaptive driving system and method for life-saving display mechanism

    Free access
    LI QI | European Patent Office | 2021

    Fixing arm support for high-altitude operation

    Free access
    LI QI | European Patent Office | 2022

    Systems and methods for displaying identity relating to service request

    Free access
    LI QI | European Patent Office | 2018

    SYSTEMS AND METHODS FOR DISPLAYING IDENTITY RELATING TO SERVICE REQUEST

    Free access
    LI QI | European Patent Office | 2019

    SYSTEMS AND METHODS FOR DISPLAYING IDENTITY RELATING TO SERVICE REQUEST

    Free access
    LI QI | European Patent Office | 2017

    Supporting device for aircraft engine nacelle

    Free access
    LI QI | European Patent Office | 2015