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发明名称
Friction type reversible drive unit for wrenches and the like
摘要
申请公布号
US2810463(A)
申请公布日期
1957.10.22
申请号
US19530354229
申请日期
1953.05.11
申请人
WILLIAMS HARRY D
发明人
WILLIAMS HARRY D.
分类号
B25B13/46
主分类号
B25B13/46
代理机构
代理人
主权项
地址
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