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发明名称
Tapping attachment
摘要
申请公布号
US2162251(A)
申请公布日期
1939.06.13
申请号
US19380246131
申请日期
1938.12.16
申请人
EMRICK GEORGE W
发明人
EMRICK GEORGE W.
分类号
B23Q5/04
主分类号
B23Q5/04
代理机构
代理人
主权项
地址
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