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发明名称
Well fishing tool
摘要
申请公布号
US1876339(A)
申请公布日期
1932.09.06
申请号
US19310583740
申请日期
1931.12.29
申请人
WILLIAM OBERLE
发明人
OBERLE WILLIAM
分类号
E21B31/18
主分类号
E21B31/18
代理机构
代理人
主权项
地址
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