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发明名称
Futterrohre, insbesondere fuer Tiefbohrungen
摘要
申请公布号
DE1015399(B)
申请公布日期
1957.09.12
申请号
DE1955P014742
申请日期
1955.08.31
申请人
PHOENIX-RHEINROHR AKTIENGESELLSCHAFT VEREINIGTE HUETTEN- UND ROEHRENWERKE
发明人
PAVEL DIPL.-ING. WERTHER;CREYTZ DIPL.-ING. WOLFGANG V.
分类号
E21B17/042;F16L15/00
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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