| 发明名称 |
Electric power tool |
| 摘要 |
A cover which covers outer peripheries of fastening screws are disposed on an outer periphery of a hammer case. A stopper which detachably positions and fixes the cover to the outer periphery of the hammer case is disposed.
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| 申请公布号 |
US7681661(B2) |
申请公布日期 |
2010.03.23 |
| 申请号 |
US20050262949 |
申请日期 |
2005.11.01 |
| 申请人 |
HITACHI KOKI CO., LTD. |
发明人 |
SAKAI MASATO;MATSUNO SATORU;WATANABE MASANORI;YOSHIMIZU CHIKAI |
| 分类号 |
B25B21/00;E21B19/16;B25B21/02;B25F5/02 |
主分类号 |
B25B21/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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