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发明名称
Oil field fishing tool for rock bits
摘要
申请公布号
US2654627(A)
申请公布日期
1953.10.06
申请号
US19490104080
申请日期
1949.07.11
申请人
DREW STORY
发明人
STORY DREW
分类号
E21B31/06
主分类号
E21B31/06
代理机构
代理人
主权项
地址
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