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发明名称
Aparelho para proporcionar comunicação de sinal entre o interior e o exterior de uma tubulação
摘要
申请公布号
BR9500786(A)
申请公布日期
1995.11.28
申请号
BR1995PI00786
申请日期
1995.03.01
申请人
TDW DELAWARE, INC.
发明人
KIM RICHARD STOVER
分类号
F16L55/00;F16L55/11;F17D5/06;(IPC1-7):F16L55/00
主分类号
F16L55/00
代理机构
代理人
主权项
地址
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