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classificationCode:"ipc:B63B"

    Welding valve zinc alloy piston buffered sea wind power generation instrument

    Freier Zugriff
    ZHANG ZHIXIONG | Europäisches Patentamt | 2015

    Flanged valve chromium alloy union spring sea wind power generation platform

    Freier Zugriff
    ZHANG ZHIXIONG | Europäisches Patentamt | 2015

    Auxiliary zinc alloy welding piston buffer offshore oil well machinery

    Freier Zugriff
    ZHANG ZHIXIONG | Europäisches Patentamt | 2015

    Tungsten-manganese alloy threaded spring offshore oil well power-assisted system

    Freier Zugriff
    ZHANG ZHIXIONG | Europäisches Patentamt | 2015

    Offshore well power assisting device with chromium and manganese alloy welding springs

    Freier Zugriff
    ZHANG ZHIXIONG | Europäisches Patentamt | 2015

    Aluminium alloy steel flange piston damping offshore oil well power-assisted equipment

    Freier Zugriff
    ZHANG ZHIXIONG | Europäisches Patentamt | 2015

    Nickel-manganese alloy flange spring offshore oil well power assistance device

    Freier Zugriff
    ZHANG ZHIXIONG | Europäisches Patentamt | 2015