1–5 von 5 Ergebnissen
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    Integral or sectional type construction method for high-leakproofness air pipe in narrow hoistway

    Freier Zugriff
    PAN JIAN / TANG YI / FENG QIANG et al. | Europäisches Patentamt | 2024

    Hoisting system for air pipe in vertical shaft and operation method of hoisting system

    Freier Zugriff
    FENG QIANG / TANG YI / PAN JIAN et al. | Europäisches Patentamt | 2024

    Construction device for improving leakproofness of spiral duct in linear tunnel and construction method thereof

    Freier Zugriff
    NI ZHIHAI / TANG YI / FENG QIANG et al. | Europäisches Patentamt | 2024

    Alternating current and direct current emergency power supply breakdown van for transformer substation

    Freier Zugriff
    HUANG NAN / YANG QI / CHEN GANG et al. | Europäisches Patentamt | 2024