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发明名称
Screw driver
摘要
<p>본 발명의 실시예에 따르면, 회전속도의 조절이 필요한 경우와 큰 회전토크가 필요한 경우를 사용자가 선택할 수 있어 작업능률을 향상시킬 수 있다.</p>
申请公布号
KR101069983(B1)
申请公布日期
2011.10.04
申请号
KR20090008944
申请日期
2009.02.04
申请人
发明人
分类号
B25B15/02;B25B15/06;B25B17/00;B25B17/02
主分类号
B25B15/02
代理机构
代理人
主权项
地址
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