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发明名称
TETNINGSANORDNING MELLOM EN TETNINGSFLENS OG ET ROER.
摘要
申请公布号
NO159037(B)
申请公布日期
1988.08.15
申请号
NO19790003643
申请日期
1979.11.12
申请人
CAMERON IRON WORKS GMBH
发明人
TIEMER, PEER
分类号
E21B33/00;E21B33/04;E21B33/047;(IPC1-7):E21B33/02
主分类号
E21B33/00
代理机构
代理人
主权项
地址
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