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发明名称
Electric communication
摘要
申请公布号
US2281552(A)
申请公布日期
1942.05.05
申请号
US19380237933
申请日期
1938.10.31
申请人
RESEARCH CORPORATION
发明人
BARROW WILMER LANIER
分类号
H01P3/123
主分类号
H01P3/123
代理机构
代理人
主权项
地址
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