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发明名称
Rod guide
摘要
申请公布号
US2145336(A)
申请公布日期
1939.01.31
申请号
US19370133469
申请日期
1937.03.27
申请人
BOYD CLAUD A
发明人
BOYD CLAUD A.
分类号
E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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