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发明名称
TEMPORARY PLUG FOR PIPELINE
摘要
申请公布号
EP0367633(A3)
申请公布日期
1991.06.26
申请号
EP19890311473
申请日期
1989.11.06
申请人
SHAFFER DIVISION OF BAROID LTD.
发明人
SNEDDON, JOHN LEISHMAN
分类号
F16L55/128;(IPC1-7):F16L55/162
主分类号
F16L55/128
代理机构
代理人
主权项
地址
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