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发明名称
Well bridging tool
摘要
申请公布号
US3130787(A)
申请公布日期
1964.04.28
申请号
US19600055364
申请日期
1960.09.12
申请人
MASON JAMES C
发明人
MASON JAMES C.
分类号
E21B33/134
主分类号
E21B33/134
代理机构
代理人
主权项
地址
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