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发明名称
Amplifier system
摘要
申请公布号
US1872264(A)
申请公布日期
1932.08.16
申请号
US19290388153
申请日期
1929.08.24
申请人
SIEMENS & HALSKE, AKTIENGESELLSCHAFT
发明人
FELDTKELLER RICHARD
分类号
H03F3/02
主分类号
H03F3/02
代理机构
代理人
主权项
地址
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