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经营范围
发明名称
OELFELDROHRSTRANG
摘要
申请公布号
DE7629004(U1)
申请公布日期
1982.03.25
申请号
DE19760029004U
申请日期
1976.09.14
申请人
MANNESMANN AG, 4000 DUESSELDORF, DE
发明人
分类号
E21B17/042;F16L15/00;(IPC1-7):E21B17/04
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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