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发明名称
Ratchet wrench
摘要
申请公布号
US1970721(A)
申请公布日期
1934.08.21
申请号
US19330652633
申请日期
1933.01.20
申请人
ALLEN WALTON
发明人
WALTON ALLEN
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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