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发明名称
PUMPEPLUGG FOR BRUK VED BROENNARBEIDER.
摘要
申请公布号
NO813237(A)
申请公布日期
1982.03.26
申请号
NO19810003237
申请日期
1981.09.23
申请人
SHELL INTERNATIONALE RESEARCH MIJ B.V.,
发明人
APPEL, CORNELIS,;KUILMAN, BARTEL,
分类号
E21B23/10;E21B37/10;F16J15/32;(IPC1-7):E21B/
主分类号
E21B23/10
代理机构
代理人
主权项
地址
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