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经营范围
发明名称
Multiple selector system
摘要
申请公布号
US2126846(A)
申请公布日期
1938.08.16
申请号
US19350002157
申请日期
1935.01.17
申请人
YOSHITO WATANABE
发明人
WATANABE YOSHITO
分类号
H04L15/26
主分类号
H04L15/26
代理机构
代理人
主权项
地址
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