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发明名称
Pipeline pig signalling device
摘要
申请公布号
US3327677(A)
申请公布日期
1967.06.27
申请号
US19660558017
申请日期
1966.06.16
申请人
KING WILLIAM R
发明人
KING WILLIAM R.
分类号
F16L55/48
主分类号
F16L55/48
代理机构
代理人
主权项
地址
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