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经营范围
发明名称
A hydraulic pit-prop
摘要
申请公布号
GB877345(A)
申请公布日期
1961.09.13
申请号
GB19580028580
申请日期
1958.09.05
申请人
BWG, BERGWERK - UND WALZWERK MASCHINENBAU G.M.B.H.
发明人
分类号
E21D15/15;E21D15/44;E21D15/51
主分类号
E21D15/15
代理机构
代理人
主权项
地址
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