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发明名称
Reamer
摘要
申请公布号
US1848404(A)
申请公布日期
1932.03.08
申请号
US19290393439
申请日期
1929.09.18
申请人
B. REINHOLD
发明人
ABEGG WALTER A.
分类号
E21B10/34
主分类号
E21B10/34
代理机构
代理人
主权项
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