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发明名称
IMPROVEMENTS IN TEMPORARILY BLOCKING BORE OF PIPE THROUGH WHICH FLUID FLOWS
摘要
申请公布号
GB8826349(D0)
申请公布日期
1988.12.14
申请号
GB19880026349
申请日期
1988.11.10
申请人
BRITISH GAS PLC
发明人
分类号
F16L55/124;F16L55/134
主分类号
F16L55/124
代理机构
代理人
主权项
地址
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