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发明名称
Automatic selection of receiving channels
摘要
申请公布号
US1747218(A)
申请公布日期
1930.02.18
申请号
US19280325197
申请日期
1928.12.11
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
BOHN WILLIAM C.
分类号
H04B7/08
主分类号
H04B7/08
代理机构
代理人
主权项
地址
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