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发明名称
Pipe roding apparatus
摘要
申请公布号
GB2207971(A)
申请公布日期
1989.02.15
申请号
GB19870017004
申请日期
1987.07.18
申请人
* GALLIFORD PIPELINE SERVICES LIMITED
发明人
DAVID * BARNES
分类号
E21B19/00;(IPC1-7):F16L9/02
主分类号
E21B19/00
代理机构
代理人
主权项
地址
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