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发明名称
FUTTERROHR UND VERBINDUNGSMUFFE FUER DIE AUSKLEIDUNG VON TIEFBOHRLOECHERN.
摘要
申请公布号
DE1906009(U)
申请公布日期
1964.12.10
申请号
DE1964M048284U
申请日期
1964.05.20
申请人
MANNESMANN AKTIENGESELLSCHAFT
发明人
分类号
E21B17/08;F16L15/04
主分类号
E21B17/08
代理机构
代理人
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