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发明名称
Power tool
摘要
申请公布号
US1754348(A)
申请公布日期
1930.04.15
申请号
US19270180179
申请日期
1927.04.01
申请人
BROWNE LOUIS I
发明人
BROWNE LOUIS I.
分类号
E21B19/087
主分类号
E21B19/087
代理机构
代理人
主权项
地址
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