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经营范围
发明名称
Ratchet wrench device for use on nuts or bolts in normally inaccessible locations
摘要
申请公布号
US2658416(A)
申请公布日期
1953.11.10
申请号
US19520308031
申请日期
1952.09.05
申请人
GEORGE A. DUERKSEN
发明人
DUERKSEN ABRAHAM J.
分类号
B25B13/48
主分类号
B25B13/48
代理机构
代理人
主权项
地址
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