getfrp
Granted

一种高速动车组用宽幅薄壁6系铝合金型材及其制备方法

Ask AI about this
Publication noCN108893661B
Grant noCN108893661B
Filing date2018-07-19
Publication date2020-07-28
Grant date2020-07-28
← Back to patentsCurated by f1frp editorial