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发明名称
PIPES
摘要
申请公布号
GB1603548(A)
申请公布日期
1981.11.25
申请号
GB19780020657
申请日期
1978.05.19
申请人
BRITISH PETROLEUM CO LTD
发明人
分类号
E21B43/013;F16L1/26;(IPC1-7):F16L1/04
主分类号
E21B43/013
代理机构
代理人
主权项
地址
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