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发明名称
System for transmitting signals in two directions
摘要
申请公布号
GB725232(A)
申请公布日期
1955.03.02
申请号
GB19530016860
申请日期
1953.06.18
申请人
HAZELTINE CORPORATION
发明人
分类号
H03F3/62;H03F3/64;H04B1/56
主分类号
H03F3/62
代理机构
代理人
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地址
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