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发明名称
Electric plug
摘要
申请公布号
US2015504(A)
申请公布日期
1935.09.24
申请号
US19320606114
申请日期
1932.04.19
申请人
JOSEPH WALKER
发明人
WALKER JOSEPH
分类号
主分类号
代理机构
代理人
主权项
地址
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