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发明名称
Inserted shaped-tip tool-bit
摘要
申请公布号
US2127998(A)
申请公布日期
1938.08.23
申请号
US19360085600
申请日期
1936.06.16
申请人
CHARLES JEARUM FREDERICK
发明人
JEARUM FREDERICK CHARLES
分类号
B23B27/16;B23B27/20
主分类号
B23B27/16
代理机构
代理人
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