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发明名称
Directional amplifier system and apparatus
摘要
申请公布号
US2756282(A)
申请公布日期
1956.07.24
申请号
US19530330809
申请日期
1953.01.12
申请人
SIERRA ELECTRONIC CORPORATION
发明人
DOUMA TJISKE
分类号
H03F3/64
主分类号
H03F3/64
代理机构
代理人
主权项
地址
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